Sysaphus
I gotta knock off the impulse buys, but I've wanted a Vinegaroon almost forever. Well, about a year.
A type of whipscorpion, they are some of the strangest-looking arachnids around. If their odd looks weren't enough, they can also squirt a cloud of vinegar-like liquid at you, although I've yet to see this in action. I have read that they have trouble catching speedy prey like crickets, by my Vinegaroon hasn't had any problem with it. My tarantulas pounce on food, my scorpions grab it with their claws if it happens by, but my Vinegaroon will literally chase it down. That's way cool.
