Perhaps this is not so much a project your kids can do... well of course they can help but it is such a sweet and nice little project... make a customized 'feed the Ducks' bag. Helen Bird from Curly Birds came with this idea and at the BKids Craft page you can see the steps she made to create these feeding bags. (they make nice presents too I think!)
Craft Project: Feed the Ducks bags...
..more Craft Projects