Infinite Filament Cube
12 led filaments and half mirror to build a infinite filament cube
What Is Led Filament?
https://en.wikipedia.org/wiki/LED_filament
If you want to buy them on ebay, you can try to search the key words led filament chip.
Solder the Filament Correctly
Solder the led filaments like the photos. And solder the motor wires to the terminal of the filaments.
Tip: the filaments are really sensitive to the solder iron temperature, you may break it if you solder it too long time or the iron setting is too high temperature.
Hang the Filaments Cube Inside the Half Mirror Cube and Glue It.
Connect the Filament Cube's Terminal to the DC-DC Boost Circuit.
I use xl6005 boost circuit to convert 5V to 60V for the filaments. Then I can use the USB power bank to power my filament cube. XL6005 can support 5V input instead of 12V input only.