Boys love forts and they are so easy to build.
My boys really enjoy climbing through blankets and dark places. We made a fort using my stash of blankets, the sofa, chair and coffee table (more like a hiding place for blankets).
Mr. I helped me round up the blankets and over lap them onto the sofa and coffee table to make an area where they could crawl through.
Mr. E enjoyed playing around in it and trying to pull it down. He's kind of like Godzilla.
We also found another fort idea on Pinterest and like doing it too. You just use a fitted sheet and cover your couch or as my mom use to say it, "sofa". I tried finding it again to post it here but can't seem to find it.