Thank you! I've been using these as warm-ups (even the rambunctious classes have student who want to figure it out before each other, and everyone has a chance, since high English ability isn't always required for these). However, lately I've just been making them up, since I ran out of new ones I could find on the internet.
You've given me a new supply to get through the year! We'll see how it goes, though - I tend to draw mine on the board, so my artistic ability might be tested. Oh well, the students like to judge my artistic abilities anyway.