Here are some things you could do!!
Read. Yeah, we know it sounds dull, but a good book truly does transcend time, space, and boredom.
Do a jigsaw puzzle.
Play with your pet. (If you have one)
Assemble a care package for someone in need.
Take an online class. (Could be for drawing, creative writing, or any other topic!)
Listen to a podcast.
Listen to an audiobook.