Fossil makes kits that are called DIY Jean kits. It is a little box filled with things such as buttons, patches, and stencils. You take these things and sew them onto your jeans. I think it would be neat to make these for eachother, but make them more craft related, such as sewing a beaded design onto a iron on patch. Here is an example of one of their kits:

The BUTTON kit includes:
50 assorted buttons
2 iron-on star patches
10 silver metal studs
3 mix and match fabrics
gold, turquoise, and red embroidery thread
1 pair of scissors
1 seam ripper
1 thimble
4 sewing needles
Is anyone was interested?
At my school you aren't allowed to have holes in your jeans (the office has a lot of duck tape to waste). Its hard having something like a pair of jeans that nobody else has unless you made them yourself.