An infinity mirror is an optical illusion that makes a single row of lights look like countless rows of lights, receding into the void forever. It's created by placing a one-way mirror over a second mirror with lights in-between. The lights turn the upper mirror transparent from the outside. Inside, the two mirrored surfaces reflect each other in ever decreasing images. The lights appear to be marching in perspective towards a vanishing point, which gives them the feeling of depth.
This guide will show you how to build an infinity mirror box lid and light it two different ways:
- a Mini Box that uses press-on Circuit Sticker LEDs
- an Animated Box that uses a strip of NeoPixels controlled by an Adafruit Gemma M0 programmed in beginner-friendly MakeCode.
Both versions can be used to store treasures after the candy is gone and are kid-friendly. The Animated Box uses AAA batteries (rather than LiPo) and a Gemma M0 microcontroller that's inexpensive enough to build in permanently.
Try one or both!
If you don't have any of the items below, you can probably substitute from crafts materials you have on hand.
For either box:
- heart-shaped candy box with thin flat top:
- Mini Box -- about 4 inches wide, holding three pieces of chocolate
- Animated Box -- about 7 inches wide, holding eight pieces of chocolate
- black cardstock or poster board
- one-way mirror window film (such as this) -- sold in giant rolls, but you only need two pieces about the size of your box
- glue stick
- clear tape
- scrap cardboard, cardstock, or paper
For the Animated Box: