Now you too can wear an abacus on your wrist! This is the coolest thing I've seen in ages. I want to make a three-stranded one so I can go into the hundreds. I wonder how much row spacers are going for these days?
Seriously, how cool would it be to have someone say, "Oh, what a pretty bracelet/necklace/whatever!" only for you to use it to calculate the cost of your shopping?
I am such a geek, and I wouldn't trade it for the world.