Ours ended up being cancelled about two weeks before, which was a bummer. We were still deciding between doing silly spray and doing a pinata with gender colored wrapped candy inside. I also saw a thing on pinterest where you make a big poster board with all the old wive's tales and what your result is and have people vote. We were going to do that as well.
We ended up just taking a picture with a banner saying "It's a Girl!" DH and I already knew the gender, this would've been a reveal for family and friends.