A while back I bought some LED lights from eBay. They're white LEDs mounted on a flexible backing, in a 5-meter roll with a peel-off adhesive back. They run on 12v. You can cut the roll to any length you want. The 15 foot roll with a transformer and plug connectors was less than $15. You can also buy just the LED roll for less than $10.
These things are bright enough that, rather than dink around with expensive LED-replacement bulbs, I'm just going to stick strips up inside the housings of dead shop lights. My wife wants me to stick some under the kitchen cabinets. And I'm going to run a strip along each side of the cargo area of my station wagon, and inside the shell of my pickup. And I'm sure I'll find other uses for them.
These things are like the Cheez-Whiz of lighting; they're absurd but useful. And they're also available to run on 5V or 12v, in different colors, and even with remote controls and programmable RGB colors. For white LEDs, they have both 3500K and 6000K colors. And some are waterproof, some not.
This is one of the vendors:
https://www.ebay.com/itm/5M-10M-20M-30M ... :rk:2:pf:0