So I've had this Helljumper figure for a while and I lost his head a while back. (Don't ask, silly story.)
Anyway, I bought a Halo: Reach figure that had a lot of alternate pieces and helmets, and it came with an ODST helmet! I was pretty stoked to have a complete figure again, but he'd been headless for so long that having the helmet back on just looked weird to me.
So, I did what any red-blooded customizer would do: I went out and bought a super-cheap $2 GI Joe knockoff, decapitated him, dremeled out his skull, and made an alt head for the figure!
Now he can take his bucket off in between skirmishes.
Next up, I'll be repeating this process on the Halo: Reach figure to give him an alt head as well! (Or maybe even a couple!)