Recommendations for coving/crown molding

Looking for recommendations for LED channels to put along my wall, that would shine onto the wall/ celing. Something somewhat minimalistic, was thinking of an L shaped channel with a "lip" to cover the view of the LEDs. Also in the USA preferably as shipping is expensive.

Appreciate any help, I've spent way too much time looking into this and it doesnt seem like there's much available. What do you use/what have you found works best? (DIY is always an option as well)