Not a sailbox story, but... Took the boat down to Nags Head, rigged it, wheeled it down to the beach, pulled the wheels, then sat back with the first beer of vacation and started working to replace a valve stem (Roleeze) so I'm not pumping it up all week. Got the tire sitting in my lap. For some reason, I have to get up, and I turn the wheel over as I do. Right inside the spoked hub is a big black widow spider. Maybe she was still too dizzy after her ride down the beach (and 5 hours of interstate) to mess with me, but HER vacation ended right there. We had another black widow crawl out of the drain hole once...
Also borrowed a friend's 16, and mice had wintered and raised a family in his sails. The holes they chewed were pretty small, but the mouse pee was TERRIBLE! Had to wash it twice with lemon-scented dish detergent before the sailmaker would touch it (and I didn't blame him a bit). There was tons of poop in the box, too :-(
Finally, I picked up two TheMightyHobie18 crossbars for a friend, and carried them home 3 hours+. Both had been on the ground, but one was still pretty grungy, so it got strapped on top of the van. Got it home and hit it with the hose, and big red ants started to come out. By the time I quit, I bet I had flushed out several hundred. If that crossbar had been INSIDE the van...