They simply forge weapons of destruction, weapons to mash, slice, dice and make julienne fries out of other living things....hey, similar to what humans do!
Mr. Potato Head approves this message.
(Actually, looks like a fun game!)
I heard the marriage didn't last, though...
Apparently, from what I've read, in the mid 1960s government safety regulations stated plastic accessories could no longer easily puncture real food, so Hasbro introduced the all-plastic Mr. Potato Head.
See, the government even cares about the safety of vegetables....oh, wait, the safety of little fingers?