Those are really clever. If I ever stay at a hotel, I'm going to write a secret message somewhere. It will include the words 'cannibals' and "time machine".
Stoves, like what our ancestors used back in the 20th century? My house has a microwave oven: no grease burns, no oil splashes, no house fires. Don't even need a special kitchen-room.
http://www.youtube.com/watch?v=BUa5oHgYV2k