Yarn balloon spheres: Cut strands of yarn, blow up balloon. Mix equal parts craft glue & water. Dip yarn in glue, wrap around balloon. Hang balloon with clothesline & clothespin. Once dry pop balloon and remove. Modge-podge could work too.
Make a wind chime out of old keys and acrylic paint. - This site has lots of cheap outdoor/backyard ideas. I can't use most because I live in an apartment - but I love the old key to windchime and spray painted folding chairs.
craft idea for kids- monster pet rocks. Pre-paint rocks and they can draw faces. I have a lot of googly eyes I can bring in. This can be a cheap project. Maybe high school kids can paint the rocks. Maybe use half Easter eggs if short on rocks?