All you need today is your happy playlist, paper, paint, and paintbrush (or whatever you have on hand–markers, crayons, pastels are ok too).
At least once a year in elementary school, there would be an art session where the teacher would play different types of music and we were asked to paint the way the music made us feel. This was less about a planned out picture, and more about emotion and movement.
Play your music loud, make a big space for your supplies, and get started! Tear off the sheets as you go, and make several paintings. You may end up with a big stack, or just one or two. Pick the ones out that you like the best, then tape them up in the places you spend a lot of time. Add words that mean something to you in sharpie if you like.