Announcement ideas for my kids?

Ki

I am trying to figure out what to do to tell my kids I'm pregnant again. Last time we did a scavenger hunt and the time before was a baby gift basket. I wanted to do something fun and craftsy to reveal but I can't think of anything. They're 11, 9, 4, and 3. What did you do? Or what awesome ideas do you have? Thank you!! 🙂