any practical use for cat poop? Answered

You can put it in a brown paper bag, take it to someone's house you want to prank, light it on fire, ring the doorbell and run.

^{_{Of course I'm not responsible for lost friendships, criminal or civil suits, lawyer fees, property damage, people being maimed or killed, and various other things that may go horribly wrong if this isn't done "correctly". :)}}

i appreciate all the answers guys (and girls?) homemade kno3 sounds interesting but im guessing my neighbors would hate me more than if i lefta flaming bag on their doorstep. this is the best website ever (except maybe ebay)

I know of no practical/safe use for cat poop.

It's unsafe to use in compost or as fertilizer.

You can bury it away from the garden and away from anywhere someone might encounter it and the minerals etc will go back into the ecosystem.

In an extreme emergency you could use it for dog food since most dogs think it's a delicacy, second only to cat vomit.

Litter Critters!!!

Do you also happen to have a source of wood ashes?  If so, perhaps you could make homemade KNO3, as described here:
http://en.wikipedia.org/wiki/Potassium_nitrate#History_of_production

Sculpture?