What is a new thing, a new something that you have recently gotten into, or that you have been a long time participant in, that you find very entertaining and fun and time consuming and distracting?
What things would we need to purchase to get into that thing?
How did you get into that thing?
'Tis the season for over-the-top programmable RGB holiday light displays choreographed to music.
https://kno.wled.ge/
https://www.xlights.org/
(I haven’t gotten to the “choreographed to music” part of the hobby yet.)
You need a bunch of WS2812 or similar LEDs, esp32 microcontrollers, wires, power supplies, mounting hardware, etc.