I had a big bag of documents needing shredded and did it with the help of my wee one. Once finished, we put all the paper in a paddling pool and both my kids went in it. For the baby I put a few toys in and made sure she is not trying to eat the paper. She was too preoccupied to watch her sister. The big one wanted her swimming equipment and had great fun.

Do note there is a bit of paper dust so this might not suit asthmatic kids.