Was idly thinking about recommendations to use tennis balls to provide a "big foot" on chairs to stop them sinking on soft surfaces - a very clever idea (particularly if you are a bit heavier than average!).
Anyway, one of the problems of using tarps etc as covers*(and many small tents) is the vertical pole at the entrance, something that has always irritated me. So I thought about tennis balls. Put a slit in them, and then put a couple of poles/branches etc in the slit and - hey presto - you have a cheap A-frame joint, and excellent protection of the cover material! Would also work in something like the Polish laavu (using three or four branches) to do away with the central pole which takes up so much usable space in the beasty.
Anyway, one of the problems of using tarps etc as covers*(and many small tents) is the vertical pole at the entrance, something that has always irritated me. So I thought about tennis balls. Put a slit in them, and then put a couple of poles/branches etc in the slit and - hey presto - you have a cheap A-frame joint, and excellent protection of the cover material! Would also work in something like the Polish laavu (using three or four branches) to do away with the central pole which takes up so much usable space in the beasty.