To hubby: place a bun by itself in the oven & tell him to go open it lol. Pretty classic but produces some hilarious reactions. As for family, there's tons of ways!! Try Pinterest if you're not on it already. I love it!
my cousin gathered family and had it recorded... she had pink balloons and blue ones and people guessed and she finally released the blue ones for her boy. you can do a gender reveal cake... or maybe some kind of poem. do you have Pinterest ? they always have good ideas.