Ladies, tell me your gender reveal ideas!

So within these next few days I am expecting a phone call from my genetic test results which will reveal if I have a little prince or princess growing inside of me.
I am wanting to do a surprise gender reveal for my husband. HOWEVER, I need a reveal idea that will allow my husband to be interactive (I want to record the experience), and also I would like the reveal idea to be completely surprising to him, so he has no idea it even has to do with revealing the gender of the baby in the first place. This is because he knows I am expecting the phone call at any moment. 
Please please please let me hear your creative ideas!! 😍