About 10 years ago I bought a Lovesac, which looks like a beanbag that's 6' x 6' x 4' and full of shredded foam. It's my favorite piece of furniture and literally indestructible as well as machine washable. Last year when I moved I actually chucked the thing off my 3rd story balcony and we use it to catapult my nieces across the room when they come over.
Now, they also make Lego inspired furniture that is even cooler. It's infinitely reconfigurable, requires no tools and is also machine washable. You just get the number of bases and sides you want and it goes together any way you want it.
If you like sitting, and building, it's worth checking out.
here's a short demo.
https://www.youtube.com/watch?v=VOeNPGFvBqg
ps.
If you use the word bean bag in their stores they might throw your butt out.
