Okay, as a gift (for carpooling a co-worker when he lost his licence) I was given a vacuum sealer.
It's good for sealing up stuff for the freezer, and seems to help it stay fresher for longer in there.

But what else is it good for that a ziplock wouldn't be better for? A ziplock can keep water out, is easier to open and easily resealed.

I have this nagging feeling that it's good for more than just its' intended purpose. Like, ammo?