One of the best DIY ideas ive seen was a guy at my old company got some fibre optic cable, drilled a tiny hole in his light lens, then fed the cable through so its tip faced the LED and then routed it to his computer. It lit the whole thing up brilliantly.
TBF, his lights were'nt expensive and he sealed them with a tiny amount of clear silicone.
Not one for everyone i know...but it was ingenious.