We've made many a paper bowl before in the past and they are one of the most rewarding things for children to create. Sure it's not a complex process, but it is a slightly messy one and it's rare you find a child who isn't into having a legitimate reason to play in glue.
Paper bowls can be used for all sorts of things. Maybe you'd like to use one for display, make a larger one and turn it into an Easter "nest" instead of the traditional basket, or seal and paint them and use them for wall art. Any option is a great way to go and this is a perfect project for any size hands to accomplish.