How can I make a hollow sphere?

I need to make a hollow sphere for a project that is supposed to look like a bomb. Any ideas?

kiffakitty6 years ago
You could buy a premade sphere and then spray paint it? Why make a sphere when you could easily modify a pre-made one? There are a lot of solid plastic ball toys at petshops, for example. Or you could even buy a weight ball like this: Or buy a bomb shaped candle at an online novelty store.
An Villain8 years ago
drop acid into a solid sphere.
iPodGuy8 years ago
Paper mache over a balloon, let it dry and pop the balloon with a pin.