Perhaps the following is not a toy "per se" but it is my new toy for sure! I just finished before the weekend and haven't had time to play with it yet ?
It is nothing else than me following one of the multiple "Ambilight for pc DIY dumb edition babysteps included" that you can find on the internet. That LED stripe you see had take 3 months to arrive (thx COVID) but with everything in place I finally could attempt the project, with very pleasant results I must say ?.
Thanks to a friend of mine for print me this very slim and discrete case for the Arduino Nano
Here the 3 month delayed LED stripe, just regular RGB addressable led, nothing special about it
Using a cardboard template of my monitor's back, I cutted the needed lenghts for each side
Making the corner soldering was quite delicate, but i didn't want to use the 90º connector and give up to having a led on the very corner
Soldering battlefield. Since the led is like 1.6 meters long (or 8.98 bananas for international scale) I thought that it would be better to give it power through each end, preventing voltage drops over the lenght of the stripe itself
Arduino ground cable and led's power soldered and insulated
All together, ready for the first test
Test looked amazing (note that the colour of the screen and the stripe are mirrored because the leds are going to go on the backside)
And the final result once all was mounted and configured
The cost of this project is about 25€ and the results "shine" ? for themselves!
Hope you like it.