:D A laser cutter for butter.
Non-chlorine plastics (acrylic works excellently) wood and textiles (leather cuts beautifully but smells awful).
Uniform thickness works best, so plywood and mdf etc are very popular choices for stuff. Leaves a nasty looking burnt edge though, so if presentation is important then acrylic is the way to go.
No PVC then. What happens if you cut that plastic with chlorine in it? Toxic fumes?
Yeah, nasty chlorine gas. Not good for health and corrodes metal, fogs mirrors etc.
No, I find bacon to be salty enough already.
I've used a laser engraver / cutter for quite a few years a work, you need proper extraction of the fumes which can be really nasty and dangerous if you cut plastics or MDF etc, so be careful. Does it have a cutting bed with it?