Here is a fine example of the former--with animals rather than machines.
Well, in our ongoing quest to turn this house into Noah's Ark, we have not only four horses, three dogs, four neurotic cats, a sulfur-crested cockatoo, a cockatiel and assorted toads, we also have William. William is a fox squirrel who absent-mindedly fell out of his tree as a blind and hairless baby two years ago and whom the vet promptly handed off to the only person he knew silly enough to traipse around with a baby squirrel and a bottle of Esbilac into her bookbag. Actually, the trick wasn't in keeping such a tiny creature warm, fed and clean---it was keeping a straight face and looking as mystified as everyone else when William woke up hungry and started pipping for his bottled like a very small, slightly muffled alarm clock. Invariably, this usually occurred while I was standing in line at the post office, picking up a pizza for dinner or on one memorable occasion, taking a final exam in biochemistry. Being no dummy, William knew a sucker when he saw one and has happily been an Urban Squirrel ever since.
Link found at a thread about When Squirrels Attack.
For more of such stuff, try The $64 Tomato, by a gardener with a little more energy and money than luck or forethought.