Ekkk I need help announcing!

Finally got my BFP! This will be my 3rd child  so I want a cute/unique way to announce it!  I'm exactly 4 weeks so around Halloween I'll be 8 weeks and ready to announce! I need ideas ladies! Right now I'm thinking I'll just show up at the in laws to trick or treat with my whole family wearing skeleton costumes and mine having a baby on the belly! What are some other ideas you have!