Simple gender ideas ?! 💖💙

Me & my husband are finding out next month, & wanting to do something simple to find out, but without his parents or mine, siblings or friends knowing it before us, so they can’t throw us a party or anything but we don’t know what we should do. We also don’t want to just plainly open the envelope. For example I know we can go give the envelope to a baker, them insert the color into a cake or cupcake but he doesn’t like pastry so it’s less special... anyone have any other ideas similar to that, where someone outside of our relationship & family & friends can do something ? 💕 I’m all out of ideas.