Here is an option for small stick-on LEDs. They may be easier than what you are trying to do.
https://www.extremeterrain.com/omix-ada-rugged-ridge-light-w-1125008.html these are a bit pricey but I think they could do the job you could also go with some closet lights and stick them where you would want to. You could also go with some closet lights like these that have adhesive and activate with a tap. https://www.amazon.com/Battery-Operated-Anywhere-Basements-Hallways/dp/B075VLYM6M/ref=sr_1_6?dchild=1&keywords=Closet+lights+tap&qid=1607151839&sr=8-6