Happy New Year!
I stumbled upon an artist online before Christmas and have been following him on Instagram before Christmas. His name is Rich McCor AKA @paperboyo
He uses cardboard cutouts to transform famous landmarks into something else. My personal favourites are these two of L'Arc du Triomphe and the London Eye.
I'm sure the children in your class would have great fun trying to recreate the school building, something in the yard or something at home (homework!),