I agree with all said, but for clasps, use lobster clasps....they will hold best, in my experience. Measure the ankle you are making the bracelet for with a piece of yarn (if you know who you are making it for) and use that as a guide. In my beading classes, I have them do this, then tape the yarn to the surface they are working on and that gives a great and easy measurement that is accurate. And as far as what to use....left over beads are great, but yes, keep with the smaller stuff. The crystals and liquid silver....oh yes, they make beautiful ankle bracelets. As far as crimping, ankle bracelets seem to have a 'rougher life' than other jewelry, so I crimp twice on each end to prevent that 'snap' and loss that can easily happen. Good luck and show us your work
Linda A. Bergstrom