I had a few options when it came to bases around my house (this stool, an old night stand, an old lego table.). It came down to what size bin I could find. This old stool would be the perfect height. My husband cut a hole in the top so the bin rests in it perfectly. The bin is just sitting there so it can be removed and cleaned.
There it is.
Very simple and very cheap because my only cost was the bin. I really didn't like the stool as a stool, it was very uncomfortable.
The kids just love this, it's the perfect height for them to play in. We will be getting a lot of use out of this item.