Yep, you CAN make a hovercraft during your lunch break now. Just follow the directions!
I built a working hovercraft using cardboard and a shop vacuum in 30 minutes.
You can build a hovercraft quickly and easily using cardboard, duct tape, and a vacuum. There are excellent instructions available on the Internet. I adapted these standard instructions by substituting cardboard for plywood. In fact you build a hovercraft out of most anything that’s more or less airtight.