If you're of drinking age, I highly recommend trying a wine & design type thing. You get to see what you'll be attempting to paint when you sign up, so the colors and vibe can be vetted to see which one you'd want on your wall before spending the time and money. But you also get the awesome activity of having some drinks, painting a thing, and maybe meeting some cool people. If you have a partner, it's also an amazing date idea, or it's dope to bring a platonic friend to. And you don't even need to be good at painting because they teach you step by step what to do, and then help you fix it if you fuck it up horribly. My wife and I have a bunch of paintings up in our apartment (3M stuff, no nails) plus some big canvas prints from our wedding. There are also some small seasonal things we swap out. If you have a craft store near you, check out small decorative projects where you do something pretty simple like paint and glue little premade bits together. Here is an example of a basic thing like I'm talking about, but I'd pick something less "live laugh love" and more whatever your personality jives with. Don't be afraid to nerd out and do Star Wars stuff or whatever you're into. The space is yours, so your comfort and interests should be welcome in your home.