There are so many lights out there that you could install a different one every day and die before you'd done them all. You need to have some idea of what type you want and start looking.
Without having a clue what size you want I'd be looking at LED rope/strip lights installed in aluminium channel, with a diffuser. Dimmable RGBW will give you flexibility for mood selection, wi-fi/bluetooth to a phone or dedicated remote will make wiring easier, and a controller which can do automated changing patterns of colour & brightness can be fun. Or annoying, depending on your POV. Addressable LEDs will allow chasing patterns, which can be even more fun/annoying
As per usual, avoid Chinese sellers on eBay or Amazon etc.