Summer art class for kids ideas...recycled art projects?

My daughter asked to enroll in a summer art program, and I agreed because it was very low cost (money is tight until after I start getting paid after returning from layoff for a month). Here's the catch: After she signed up, we found out that it was a class in "Reduce, Reuse, Recycle" projects. They want the students to basically bring in a set number of art projects ideas for the first class, and then each student will bring in materials for those that are selected! I think it's great and all...a nice idea for summer projects that can be given out as gifts by the kids later on in the year...but they each need ideas for at least five projects (preferably ten), a list of materials needed, and step-by-step instructions! EEK! Some of the things they talked about being most interested in being used are plastic bottles, tin cans, pop cans, paper milk cartons, plastic milk jugs, old magazines, old boxes (especially shoe boxes), and wooden picture frames (minus the glass). I came up with some old school projects we did when I was a child... 1. A bird feeder made with old two liter bottles 2. A pen/pencil holder made from a soup can 3. An Easter bunny basket made with an old paper milk carton and cotton balls 4. A weaving loom made from an old picture frame I don't think #4 is a good idea because it involves hammers and nails, and even though my daughter is capable, some of the children might not be. So, I'd like to come up with at least two more ideas...for kids ranging in age from 7-9...so nothing too difficult, and something that can be done in two hours (the length of the class). I was thinking about old cat food cans (the short ones, not the ones the size of soup cans). We did a project in 4-H once using them, but for the life of me I can't remember what we did with them... Anyway, does anyone have any ideas? Her class will start in two weeks, and I want to try them out with her to make sure they're not going to be too confusing before we make up the list. Thanks in advance!
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http://www.make-stuff.com/recycling/ http://images.google.com/images?q=recycl… http://www.google.com/search?q=recycle+c…
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