Gender reveal party!

My close friend is pregnant and it was a surprise and i wanted to get her excited. she's 8 weeks and i told her she should have a gender reveal party and she said yes! but she asked me to plan it. now i love gender reveal parties i love them so much that i watch them on youtube like all the time. i want to do it on kinda a budget. any ideas? she wants the kinda yellow bumble bee theme and i love that. any ideas to kinda help me? i know we have at least 10 weeks until we figure out the gender anyway but i am hyped about this. i already have a pinterest board for ideas! but as i said i want it on a budget. how much did everyone spend on their gender reveal party?