OK, so this doesn’t officially qualify as liquid crystal, but I found a couple of my childhood toys on eBay recently and had to share.
Mechanical, or battery-powered coin banks were insanely popular in the late 1970s (at least among my friends they were) but weren’t in plentiful supply in local toy shops so were held in high regard. A friend or relative returning from overseas with one of these toys could raise your social standing instantly among your classmates.
And they were pretty cool; a coin left in the appropriate slot would be whisked away by a wizened hand, skeletal arm, moving teeth, a worm, two kissing lovebirds…just about anything!
Dracula’s bank had a couple of fun features, first the whole bank would move when you placed a coin in the slot (assuming you had previously inserted the two C batteries it required) lifting and falling a few times before the lid opened and a green hand and arm emerged toward the coin. The hand moves slowly toward the coin, grabs it, and instantly — and I mean instantly — disappear, closing the lid and taking the coin with it.