#1 is still unsolved.
It’s my intention to put up a new “What is it?” usually on Friday of each week. This will give the working folk better chance to compete. I said Friday, but at least it will be close to Friday. There may be times the winner, if there is one, may also be announced on Friday. I will try to do better than that, but it’s shortly going to get busy in my household.
As usual, guesses are entered in the comments section.