Lay the box on its side with the open face forward. Cut tree shapes from green and brown paper: trunk plus treetop, roughly eight centimetres tall. Fold a one-centimetre tab at the base of each tree.

Glue the tabs to the inside base of the box so the trees stand upright. Cut a paper rectangle to line the floor and glue it flat.

Scatter paper leaves on the floor, add toy animals from around the house, and play.