There is my DS Lite, Which can run at 2x speed, and has a switched out power LED.
I followed this tutorial, I just used a different oscillator crystal.
Then there is my PSP 1000, It runs GEN's v5.5 custom firmware (5.5 GEN-D3) and has LED triggers now, combined with its white no led trigger mod, it turns the triggers acid green.
Dont be afraid to comment, I will answer any questions you might have about the systems as well.
The PSP has been modded more, now it has a glowing PSP logo and a speaker mod too!