Funny you should mention lighting up a Kent dust shoe...
I finally got around to doing so a few weeks back. Had leftover 24V LED tape cutoffs from a kitchen job. Tapped into the 24V fan motor power and hot glued a couple 1.5" cutoffs to the top of the Kent shoe. Based on the use of scraps and little time invested, I feel it's worth the convenience during tool changes, inspecting intricate work in progress, or simply easing visual verification that the bit is in fact spinning before commencing running a part file.
(Hey - it gets pretty loud between dust collector, vac hold-down motors, plus earplug layer for audio confirmation to reach my ears...)
Kent Shoe with LEDs.jpg
Kent Shoe with LEDs V2.jpg
I recommend giving it a try.
I've also seen others with LED's on the gantry for visual alert that machine is operating, which I also find very appealing.
This was uber-simple, very effective, and actually kind of cool...
Jeff