@pardalinum
I agree, collecting spiders isn't a half-bad hobby. I have a hole in the ground about two feet deep and maybe three feet in diameter. It's where I keep five funnel-web spiders (no roof or anything, they like it in the hole so they stay there). I feed them grasshoppers, and it's quite fascinating to see how viciously they attack their prey, placing their strikes extremely carefully, so as to disable the creature as quickly as possible.