I think these are nifty. Both come via Mirabilis.

This one’s a virtual whale. You set the inset on a spot on the whale’s body, then watch him swim by, life-sized.

This is a story that needs to become a novel. See, there’s this important antique clock in Paris, and the authorities were just letting it rust away. So a group of “guerilla” restorers broke into the museum, set up a workshop, and worked for a year to restore the thing. Only then did they alert the government to their act of reverse sabotage.

It seems to me there’s a parable there.