Here’s a short video showing how the dispenser works:
Now the other thing. I don’t have words for such occasions. Some of you actually figured out what the mystery thing from the previous post is! Whoever you are, may I suggest you start a career in forensic science? To get at the truth from so little clues, I was sure you will never guess it. Yet you did.
I’ll let everyone know soon what it is, and then you’ll see for yourselves that it wasn’t easy or obvious. Anyway, the thing is almost done and ready to see.