What are these wood things outside of the tents?

If not for lacing boots, maybe for climbing into something high off the ground, like a truck? I immediately thought of mounting horses, but I think I forgot which century it is.

If there is 50 people per tent, like it's been suggested, I wonder if they aren't used for water jugs for personal hygiene? Picture Jerry cans with little spigots on the caps. I used them back in the day. But use a little water to brush your teeth, shave, whores bath, whatever. Also to drink

Just an idea.