HELP! Unique ways to announce gender?

Courtney • Baby Caroline was born 7/29/18😻 #Policewife #FTM

Between my husband and I, we have six parents that will be grandparents to our baby coming in July! We’re having a party to announce the gender to everyone in March, and I want the six grandparents to reveal the gender to us and everyone in a unique way! (They won’t know the sex ahead of time) Either by doing an activity, opening something, I don’t know! Any ideas!??