We are on grid, and so have 120/240vac available.
For some rooms, I use 24vdc LED strips:
https://www.superbrightleds.com/led-strips-and-bars/led-strip-lights-by-voltage/24-volt-led-strip-lights?rownumber=99799
I buy used, industrial DIN rail 24vdc power supplies to run them.
Now they make...