Alright, here are the rules.
Think of an item, may it be natural or unnatural. Make a small description without giving to much away in a question like this.
"I use water, turning it from cold to hot. Relieving pressure when I am conjested. What Am I?" - Jubari in SB
However I got some quick close replys but not exactly what I was looking for so I gave in and told them it was a Steam Engine.
Now what I want you to do, is something like that. We'll try to guess what it is, and if you feel people are far from what your thinking of drop another brief hint. Try to get us closer. =P If we still don't get it, you can give us the answer or keep playing. ^_^
Now lets see what you guys have. If you can beat me to my next riddle that is. =P!