Mark, Leo, Michel,
Ole hasn't replied to this yet, but I'm sure he will.
But as far as I can see this is simply pieces of rubber band and some kind of narrow tube or pearl. It should be easy to replicate with exactly that - fat rubber bands from any office supply and pearls or tubing from any craft store - or even small pieces of fly tube from your flyshop.
Cut the rubber and the tube into suitable pieces, thread some mono through the tubes and pull the rubber through in a loop. Make sure the friction is suitably high and you have something, which resembles Ole's small thingamajigs.
Martin
