This book, by the side of the road in a free box with its eight inch square colourful pages,  was brought home and –

one of those pages folded into a water balloon –

which upon inflating with one quick breath looked like this on top and like this –

on the bottom.  Water was dribbled carefully into that hole and then –

the water-filled balloon was thrown onto the deck where it burst in a satisfying spray of water.

A water balloon game of tag on a hot summer day is fun and refreshing. 

There are books on origami at the library with instructions on how to make the balloon; oodles of info on the Net .

Enjoy!