I really like those, will have to think about a larger version., check out these bailers from the New Zealand Maritime Museum in Auckland.
Lots of my paddling includes large lakes or southern rivers with steep overgrown banks where it is just easier to get back in. I practiced self-rescue and concluded that it is not possible to re-enter the canoe without bailing it some first. I don't have confidence I could shake, toss, or otherwise empty my tandems without a bailing scoop.
The bailing scoop is now part of my kit. I always carry my life jacket, paddle, and a medium dry bag backpack. The dry bag has the normal canoe crash kit, and has the bailing scoop clipped to it.
For now I think I'll have one of the kids paint some trees and flowers on the baling scoop.