Our Friends model for today is a gate or doorway in festive holiday colors. Based on past experience, I have to assume this is part of a European Christmas market of some kind. There is a clip on one side, and a bar that such a clip could grab on the other, suggesting that this will connect to more models of a similar design.
Today’s Marvel model is the Quinjet decked out in festive colors. Perhaps a gift-wrapped model in red and white wrapping paper?
This year I purchased and am building just two of the available five calendars LEGO has released: Friends and Marvel. If you want to build the others, here are some links to them on Amazon: City, Harry Potter, and Star Wars. (But please don’t support Harry Potter, due to the transphobic politics of J. K. Rowling.)