I'm sorry if this has been suggested before, because if it has I didn't see it, and I'm sorry if there's already too many of these threads.
I had an idea about a tool that makes an explosion at the mouseclick. It'd go into the tools category, you'd select it, click somewhere and the following happen: -A BOMB like explosion appears at the mouseclick -TNT/Bomb sparkles in large numbers that fade quickly -A nice mix of 1/5 PLSM, 3/5 FIRE and 2/5 SMKE -Some pressure, not too much, enough to break some BMTL.
It'd be a tool ment mostly for fun, sorry if it's useless and obviously has no uses, but it would be entertaining.