DIY Kids Craft: Dream Catcher.....I like this idea but I think it would be a better idea with a few kids to do not a classroom of preschoolers. It's a lot of work too. So may be better for kindergartens or older. Although I know a few preschoolers who could sit and do this with no issues.
Summer craft idea: Turn empty water bottle into these cool garden art spirals. Learn how you can turn empty plastic bottles into pretty yard art with a few simple supplies ( great project for the kids :)