Hi Richard,
As mentioned on the phone, one of the character RGB backlit screens would be perfect for this. To get started with your project, I’d recommend the following:
Then to connect everything up, you’ll want to grab some hookup wire: PRT-11367
If you want to make it a portable project, then you’ll want to grab an Adafruit Power Boost, and your choice of LiPo battery (whatever works for your size constraints).
