Gender reveal party

Is anyone doing one of these? I've been to about 5 of them and we are doing ours next month. But we're trying to figure out the way to actually reveal it...my 5 year old wants to do silly string..my husband wants to do a pinata...me..I kinda want to do the handprints on the white tshirt type thing but I don't know. My sister did the black balloon so I don't want that and my sister n law did the box with balloons in it..so not that either...any ideas?! Thanks in advance!!