Tell us about yourself!
I have done this same thing but using the solid white plastic LED strips that come in various lengths, along with white plastic covered wire race between sections and to power, all attached with small screws. Drilled through the bottom lip of the cabinets and into drywall, fished power wires, and installed boxes with standard toggle switches powered off existing counter top outlet boxes for a built-in look. The large corner cabinet needed four sections mounted in W pattern to get good even light.
I also keep around several of the good old Pink Pearl erasers which usually come in packs of three. Pretty effective at it but do create a fair amount of crumbs. At least they last longer than the tiny pencil tip type. I think we used those back when I started grade school in 1949. May have been a different brand name, but the same product. Some technology just seems to keep on working.