Depending upon your project, perhaps the new MakerPort might be a good fit? https://makerport.fun The basic kit comes with a built-in speaker, a bunch of LEDs, a servo, an LED matrix, and other goodies. The default firmware works with Scratch, Snap, and MicroBlocks, but I believe you can also use your own custom firmware.

As an aside, this technique is also used to remove the "yellowing" from Apple II computers:

https://youtu.be/aFGS9xaaO_M

There's even special formulas of hydrogen peroxide, arrowroot, and oxyclean, with raging debates on the proper ratios, how long to keep them in the sun, etc:

https://www.callapple.org/vintage-apple-computers/apple-ii/s...

I feel like the removal of yellowing from things like Apple II computers known colloquially as 'retrobriting' as showing in your video is more the use of peroxide compounds which are not used in the article.

"The blue light reduced the yellow stain substantially more than hydrogen peroxide or UV exposure. In fact, UV exposure generated some new yellow-colored compounds."

And...this is the first Apple 1 to be offered where payment in Bitcoin and others is accepted, making it a truly unique connection between the beginning of personal computing and the beginning of cryptocurrency. Only one Apple 1 will hold this first-ever position, and this is the one!