What is a suitable craft for teenagers to make at a week long summer camp?

I work for a summer camp and am trying to find a craft idea for the teen age group. The camp is a week long and the campers are 12 to15 years old. In the past we have done leather work (we made belts) as well as wood burning. I'm looking for a project that would take a fairly high skill level as so the teens don't get bored. Any ideas would be very much appreciated.What is a suitable craft for teenagers to make at a week long summer camp?
Tye-dying is not necessarily a high skill level, but it can be a high creativity level. If they can do more than one project, they can try different techniques and dye combos to change their designs.





Batik is a similar idea with higher skill level. It doesn't need too many supplies - cloth, dye, an iron, wax, and something to heat the wax in. I did it in 8th grade art and we loved it.





If you have money for the loom supplies, weaving belts or weaving with beads could be fun. The looms are pretty small and simple for both.What is a suitable craft for teenagers to make at a week long summer camp?
What about weaving a basket. I have taught teens to make a basket before. It is a bit difficult to start but they get the hang of it after a day or so. They are always pleased with the results!
Why not teach them to crochet or knit? They could make small squares as they practice, and donate the blocks to Warm Up American when they are finished.
Origami! (:





I consider making stars and cranes fun. It can also be used as a nice gift or something to display.
A small quilt or blanket?





something where you get to weld ?