This is a fun, budget-friendly activity that you can do with your family right at home.
large cardboard box
Tape up the top flaps and all edges around the box.
Taping the flaps of the box together makes it taller and reduces the number of edges, and tapes the rest to reduce the chance of a paper cut.
Draw out where you want to cut a door, window(s), or skylight(s). The design can be kept fairly simple or be more complex.