The other day, my seven-year-old showed me a "doorknob monster". You look at a door edge-on, the doorknobs on either side are the eyes (on stalks!), and the latch thingy is the tongue. You can make the tongue move in and out by turning the knob:
It reminded me of Jimwich's faces, a series of office objects that look like faces. My favorite is the operatic stapler, which I didn't even "get" until my son pointed it out to me.