
Draw on a Chalkboard
Chalkboards can add a level of secrecy to the treehouse: it allows you to leave secret messages for your friends or family. Let your friends know when you will be back from dinner or simply have fun drawing endless pictures on the erasable surface. Kids could even pretend they are back in the classroom, giving each other school lessons for the fun of it. Play tic-tac-toe or hang-man, old school games that used to provide us with countless hours of entertainment. Just be careful where you place the chalkboard as it could get damaged if exposed to the elements.