Here is a super simple sign for the door. I took a round piece of wood (you can buy round pieces at the craft store, or in this case, I bought some cheap wood and used a jigsaw to cut out a circle). I sprayed it white, did a little black outline with permanent marker, painted on some stitches and then speckled it with black paint with a toothbrush (scrapping my nail down it). I don't know why the speckling always makes projects look better, but it does. I added a wire and some ribbon because...ribbon makes the world better. You could add a team name or a family name at this point. Fun, simple. Ready for summer.