# Last-Minute Halloween Accoutrements with HalloWing ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/062/939/medium800/led_pixels_office-werewolf.jpg?1538534506) _Oh noes!_ An 11th-hour invite to a Halloween function and _you don’t have a costume ready!_ Or maybe you want something _discreet_ but _fun_ when the work dress code _doesn’t permit a full werewolf getup._ **_HalloWing_ to the rescue! ** Our spooky little development board, plus a few extra tidbits from [Adabox 009](https://learn.adafruit.com/adabox009) (or your parts collection) can quickly make an eye-catching accessory that no good host would turn you away for being under-dressed. https://youtu.be/o9Lf6kRVMuo ## Parts Featured ### Adafruit HalloWing M0 Express [Adafruit HalloWing M0 Express](https://www.adafruit.com/product/3900) [This is Hallowing..this is Hallowing... Hallowing! Hallowing! ](https://www.youtube.com/watch?v=kGiYxCUAhks&t=39s) Are you the kind of person who doesn't like taking down the skeletons and spiders until after January? Well, we've got the development board for... In Stock [Buy Now](https://www.adafruit.com/product/3900) [Related Guides to the Product](https://learn.adafruit.com/products/3900/guides) ![Video of a blinking eye on a Adafruit HalloWing M0 Express.](https://cdn-shop.adafruit.com/product-videos/640x480/3900-07.jpg) Featured ### Mini Oval Speaker - 8 Ohm 1 Watt [Mini Oval Speaker - 8 Ohm 1 Watt](https://www.adafruit.com/product/3923) Hear the good news! This wee speaker is a great addition to any audio project where you need 8 ohm impedance and 1W or less of power. We particularly like this speaker as it is small and comes with nice skinny wires with a connector on the end. It has a handy... In Stock [Buy Now](https://www.adafruit.com/product/3923) [Related Guides to the Product](https://learn.adafruit.com/products/3923/guides) ![Small, black, oval speaker with Pico Blade connector.](https://cdn-shop.adafruit.com/640x480/3923-06.jpg) Featured ### 3 x AA Battery Holder with On/Off Switch, JST, and Belt Clip [3 x AA Battery Holder with On/Off Switch, JST, and Belt Clip](https://www.adafruit.com/product/3287) This battery holder connects 3 AA batteries together in series for powering all kinds of projects. We spec'd these out because the box is compact, and 3 AA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries, plus it has a nifty on-off... In Stock [Buy Now](https://www.adafruit.com/product/3287) [Related Guides to the Product](https://learn.adafruit.com/products/3287/guides) ![Angled shot of 3 x AA battery holder with on/off switch, JST, and belt clip.](https://cdn-shop.adafruit.com/640x480/3287-00.jpg) ### - or - Featured ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ![Slim Lithium Ion Polymer Battery 3.7v 400mAh with JST 2-PH connector and short cable](https://cdn-shop.adafruit.com/640x480/3898-05.jpg) ### - or - HalloWing can run directly from a small **lithium-polymer battery** (such as the one included in [Adabox 009](https://www.adafruit.com/product/3956)) for **an hour or two** , depending on what it’s doing. If you want it to run for hours on end…all day or all night…it’s real easy. Simply use a pocket-sized [**USB battery bank**](https://www.adafruit.com/product/1959) (the sort you might _already have_ for topping off your cell phone) and a USB A-to-microB cable. This is especially helpful for **NeoPixel** projects. - [Next Page](https://learn.adafruit.com/last-minute-halloween-accoutrements-with-hallowing/sound-costume.md) ## Guide Products ### Adafruit HalloWing M0 Express [Adafruit HalloWing M0 Express](https://www.adafruit.com/product/3900) [This is Hallowing..this is Hallowing... Hallowing! Hallowing! ](https://www.youtube.com/watch?v=kGiYxCUAhks&t=39s) Are you the kind of person who doesn't like taking down the skeletons and spiders until after January? Well, we've got the development board for... In Stock [Buy Now](https://www.adafruit.com/product/3900) [Related Guides to the Product](https://learn.adafruit.com/products/3900/guides) ### Mini Oval Speaker - 8 Ohm 1 Watt [Mini Oval Speaker - 8 Ohm 1 Watt](https://www.adafruit.com/product/3923) Hear the good news! This wee speaker is a great addition to any audio project where you need 8 ohm impedance and 1W or less of power. We particularly like this speaker as it is small and comes with nice skinny wires with a connector on the end. It has a handy... In Stock [Buy Now](https://www.adafruit.com/product/3923) [Related Guides to the Product](https://learn.adafruit.com/products/3923/guides) ### 3 x AA Battery Holder with On/Off Switch, JST, and Belt Clip [3 x AA Battery Holder with On/Off Switch, JST, and Belt Clip](https://www.adafruit.com/product/3287) This battery holder connects 3 AA batteries together in series for powering all kinds of projects. We spec'd these out because the box is compact, and 3 AA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries, plus it has a nifty on-off... In Stock [Buy Now](https://www.adafruit.com/product/3287) [Related Guides to the Product](https://learn.adafruit.com/products/3287/guides) ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ### USB Battery Pack - 2200 mAh Capacity - 5V 1A Output [USB Battery Pack - 2200 mAh Capacity - 5V 1A Output](https://www.adafruit.com/product/1959) A smaller-sized rechargeable battery pack for your [Raspberry Pi](http://www.adafruit.com/raspberrypi) or [Raspberry Pi B+](https://www.adafruit.com/product/1914) (or [Arduino](http://www.adafruit.com/arduino), or  No Longer Stocked [Buy Now](https://www.adafruit.com/product/1959) [Related Guides to the Product](https://learn.adafruit.com/products/1959/guides) ## Related Guides - [Adafruit Hallowing M0](https://learn.adafruit.com/adafruit-hallowing.md) - [MakeCode Arcade Pixel Animation](https://learn.adafruit.com/makecode-arcade-pixel-animation.md) - [Matrix Portal RGB Display Handbag](https://learn.adafruit.com/matrix-portal-rgb-display-handbag.md) - [Wireless ESP32-S2 Touch Screen Controller for Pure Data](https://learn.adafruit.com/wireless-esp32-s2-controller-for-pure-data.md) - [PyLeap CLUE Sensor Plotter](https://learn.adafruit.com/pyleap-clue-sensor-plotter.md) - [Wearable Continuous Temperature Monitor with Adafruit IO](https://learn.adafruit.com/wearable-temperature-monitor.md) - [PyBadge GamePad](https://learn.adafruit.com/pybadge-gamepad.md) - [Simple Mini Fume Extractor](https://learn.adafruit.com/simple-mini-fume-extractor.md) - [Programmable Wireless BLE Gesture Mouse](https://learn.adafruit.com/ble-wireless-gesture-mouse.md) - [MLX90640 Thermal Camera with Image Recording](https://learn.adafruit.com/mlx90640-thermal-image-recording.md) - [Wireless LED Juggling Balls with ESP-NOW](https://learn.adafruit.com/wireless-juggling-balls-esp-now.md) - [Make It Glow: How to Solder NeoPixels, A Beginner's Guide](https://learn.adafruit.com/make-it-glow-how-to-solder-neopixels-a-beginners-guide.md) - [Water Drip Dress with Oozemaster 3000](https://learn.adafruit.com/water-drip-dress-with-oozemaster-3000.md) - [PyBadge Case](https://learn.adafruit.com/pybadge-case.md) - [CLUE Step Counter](https://learn.adafruit.com/clue-step-counter-st-lsm6ds33.md) - [IoT Air Quality Sensor with Adafruit IO](https://learn.adafruit.com/diy-air-quality-monitor.md)