Honestly, I recently bought soem rainbow pony beads and some elastic to tie around my wrist, and managed to make an entire arm of braceletes. You can find pony beads in huge bulk bags at Wal-Mart or any craft store, along with the string. You could even cut a rubberband, thread things onto it, and re-tie it.
String is good. You can even make your own beads by cutting newspaper into a strip that's thick on one side and more thin on the other and then rolling them up and gluing it. It's actually pretty nice.
get some string or fish line or whatever, tie a not at the end. string your charms or beads on it then tie a knot at the other end then tie both ends together.
take fishing line and beads and tie a knot at the ebd of the fishing line and string on the beads any way you want to