My son copied those lean to's one finds in the wilderness, you know the ones? Sometimes you will find two lean-to shelters with a campfire in the middle. He would rebuild the broken campfires or hide workbenches inside them. We got lucky when we built our HQ, in that we had two abandoned villages off to the west and east of our location. I simply added workbenches to all of the buildings, repaired and fixed roofs, then added some campfires and workbenches up in the trees. Out of sight out of mind ...

I also added a half-dozen wards, and simply had my son interact and opt-in on them before activating them. They can be buried or set-up to look like altars to ancient gods.