“Bought 2 of these along with 2 of the Duplo size and glued them to a piece of plywood. Result is a 4x4 piece that is half regular and half Duplo. It makes a great base that is sturdy to lay on carpet or put anywhere really. Thought about making it a tabletop but we use it more on the floor anyway so can just be set up on a card table or something whenever wanted/needed.”