I made these. :) And not as in "I bought beads and put them on a string" I mean as in "I started with chunks of stone and a primitive wooden drill and did everything by hand over several hours." It was surprisingly satisfying. Most people just took 15 minutes or so and made one, but I just had to keep trying different ideas.

(This was at a local event where there was a whole area full of stone-age craft stuff, very cool. The stone and pine nut beads were the only ones that passers by could actually sit down and do though, the other things were just demonstrations.)