Gender reveal party-not much money to do a lot

Jess
I really want to have a gender reveal party but my SO and I don't have much money due to me being in the hospital. I want to have it the first weekend in August which gives us a little bit of time to actually come up with SOME money to get food and a cake. But what foods can we do to where I'm not spending too much money? We know there will be about 40 guests. Should we even do food? I'm stuck. Any ideas or suggestions on what we can do?