Gender Reveal Party *REVEAL IDEAS?*

Megan • Happily married to Matt. We have a 6 year old daughter named Jordyn & we are expecting our 2nd daughter, Kennedy in June
Pregnant with baby #2. Our daughter is almost 6, so gender parties were unheard of back then! Thanks to Pinterest, I'm dying to have one. 
My husband & I are back and forth on wether we want to find out the gender, or just have the tech put it in an envelope and be just as surprised as our guests. 
What I need help with -- I need ideas on the reveal. I don't want to do it with food. (No colored cake, etc.) But, other than just opening up the envelope at the party and having the answer in there, how could we do it without us knowing first? I know we could have someone else have the envelope and make something but I can't decide WHO I would want to know the gender before us! 
😩 Struggling and driving myself insane over this!!! Please help! Any ideas are appreciated!