Do you have a flashlight for when the power goes out? Or... something to help little ones get around during Halloween? 

I guess you could always go to the store... Nah, let's make one instead!

The following items are what the guide uses to construct the PT3000... there is a lot of room for substitution and creativity.

• Super Glue (plastic-to-plastic)
• E6000 (plastic-to-PCB)
• Semi-transparent filament
• Soldering iron and solder
• Wire stripper / flush-cutters
• 3x 3mm LEDs
• 1x appropriate value resistor
• 1x 9v battery clip
• 1x 9v battery