It's enough of a novelty to get him to laugh, that's for sure!

Putting his mind partly to work on a different way to refold the paper to send it back to Ben in likewise fashion, he writes:

Vehicle parts, or something more generic? Or perhaps a submarine?

It was only an offhand thought, but upon consideration it seemed worth pursuing to him. Walter folded the paper up again - a different shape than before - and tossed it at a proper angle to fly back at his friend.