If you're interested in DIY:

LED lights as a string or strip - sk8612 are RGBW, which you need if you want a nice looking white. Lots of strips of varying density and waterproofing are available everywhere; strings ("pixels") can be harder to find but are available on AliExpress.

Controller is https://quinled.info/

Runs wled which has a simple web interface, mobile apps, and works with home assistant.