Make a Stick Person! Heck, make a Stick Community! Fun, open-ended craft that preschoolers (and toddlers) can do all by themselves, and work on their fine-motor skills at the same time. Plus you get some free DIY dolls to roleplay with at the end!
Forest Craft: How to make a stick picture frame
Enjoy your local wild birds and encourage a love of Nature with this heart shaped DIY bird feeder craft for kids