Sneaky/funny pregnancy announcement ideas

Hi all! I'm currently 8 weeks pregnant with my rainbow baby (we did hear a strong heartbeat this week!) and I'm planning to wait until I'm closer to 16 weeks to announce to my parents and in-laws, but I wanted to start brainstorming announcement ideas. Last pregnancy we announced early and we gave them each sets of mugs that said promoted to grandparents, but this time I really want to do something funny/subtle/sneaky that will take them a little while to figure out as we are a family of pranksters and I went the cutesy route last time. Let me know your ideas! I do also have 2 dogs and 2 horses if anyone has any ideas involving my fur children :)