My grandchildren often enjoy accompanying me into the shop. To make sure they have a comfortable place to play while I work, I built them a small table and chair set using some spare five-gallon buckets I had lying around. Cans inside buckets. The construction of the seats starts by using a hole saw to define the corners of the seat back cut-out and then removing the waste with a jig saw. The plywood seat for the chair is supported by an empty paint can. The paint can is attached to the seat and inserted into the bucket.
The table consists of a plywood top supported on a five-gallon bucket. The lid is simply cut to size, and then it’s attached by sandwiching plywood around the bucket lid. The lid, with attached top, snaps onto the bucket. Best of all, I can store their toys inside the table bucket.