Camouflage.
RobotToaster
Probably about the same, you still have stuff like the intel management engine backdoor.
Creative commons is pretty big in 3d printing (arguably it shouldn't be, there's open hardware licenses that are better suited for it).
I was trying to clean something in a bucket of bleach, but didn't have quite enough to cover it. I grabbed a bottle of toilet cleaner, assuming it was just expensive thick bleach, and poured a bunch in. After I started coughing I looked at the back of the bottle, it's active ingredient was hydrochloric acid.
Cars, probably a controversial one, but we don't really have "muscle" cars like the firebird and mustang in the UK, and I've always been a little fascinated by them.
China has been demonised by the west for 100's of years, it's nothing new https://en.wikipedia.org/wiki/Yellow_Peril
pencil, graphite is conductive.
Probably plain L-phenylalanine, since it's the precursor to phenethylamine, the body's natural amphetamine.
Personally I'd define cooking as something that creates an irreversible physical or chemical change using heat.
Nobody wants an AI that talks like that.