Fancy Dress might be fun just let everyone turn up as what they want rather than a theme (makes it more diverse and fun)
So who's gonna be the back of the AT-AT from Star Wars
Jason
I thought of that idea months ago, you could use big cardboard box for the body and a small box on a pole for the head
The AT-ST ( two legged one ) is a better idea. The main body is a cardboard box but you wear a stormtroopers helmet and stick your head out the top turret
You could make them from sheets of foam to make it safer and if you fall over ( Jason never falls over
it would bend back into shape.