It never ceases to amaze me what sorts of things people come up with, given enough time and motivation (and who knows what else). For example, this:
Yes, that's a solar-powered Queen Elizabeth II doll that'll sit on your desk (or wherever) and smile and do a slow and graceful wave whenever the sun's shining. I just saw these for sale locally, too; they even come in three colors, turquoise, yellow and pink. You, too, can own the Queen, for less than 20 bucks!
As a friend of mine put it yesterday: I have not the words. One does have to wonder what the Queen herself thinks of these (assuming she even knows they exist); presumably, she's veering between amusement and bemusement.