Take a walk and look at the beautiful things around you. Take a little notebook or something and make it a scavenger hunt like "a thing that makes me smile" or "unexpected beauty" or "something silly" and write them down or take pictures with your phone. Then when you get back, tell someone about your walk and share the pretty things you found. Or if it's autumn where you are, try to find some pretty leaves and collect them. If you have some crayons and paper, you can make a leaf rubbing. Art like that can be fun because there's no pressure when you're coloring with crayons, it's just being like a kid and playing.