Warning: if you place a Black Hand tent in your camp, and it touches some of your other stuff, the tent may disappear into thin air, if you pick up the thing it touches.
I had a Gaff Rig (the small “fan shaped” tent) that touched two of my worktables. When I returned one of the worktables to my inventory, the Gaff Rig completely disappeared.
Lesson I’ve learned from this: if I manage to find another Gaff Rig, I will pick up the tent before attempting to move anything in the vicinity of that tent.
Geez man, this game has so many infuriating bugs …