Any ideas (within reason) for things I could get them to cut me on the side? Available materials are pretty much aluminium, steel and perspex. I think 2mm is the thinnest sheet we have. Ahh actually there's some .9mm copper sheet too which might be nice. I suppose I could actually buy some brass or something special for it but I'd rather use their materials... IF I did something with copper I could etch into it afterwards too actually, as I'm doing some acid etching at the mo.
We made these earlier:


Some of the guys have been getting football emblems cut out but that's a bit ghey, i wanna get them to do something a bit more advanced.
I was thinking maybe the component parts for a little TF2 turret or get something lame cut into my pc case. Any ideas?
edit: to illustrate, it's the same variety of cutter as this (mute before playing):




