Michael and I have a lot of bookmarks, but they're fairly unexciting, and to be perfectly honest, they're not true bookmarks. We've got a bag filled with random business cards, old paper airline tickets, foreign train tickets and the like. They bend and crease and tear, so they eventually have to be tossed, but I can't really bring myself to buy "real" bookmarks. But these so-called "fingerprint" bookmarks are a bit tempting. If I'm juggling multiple books, sometimes it's hard to remember exactly where I left off on a page, but these neat things point it out to the line. The rubber makes it so they don't budge, as does the fact that they wrap completely around the book (although I'd be a bit worried they'd crease a nice dustjacket).
They're not actually in stock yet at Fred Flare (scheduled to ship March 28; priced at $8), but you can sign up for their waiting list here.