Igby is a bit of a bulimic. I don't think it's for any concern for her figure, and I don't think she purges intentionally. It's just that she hasn't figured out how to pace herself when eating.
When I think of it and have the time, I limit her consumption by just putting out a small amount of kibble at once. This is super annoying. I don't have a dog because they're too dependent. I needed to find a better way.
I started searchingbthe internet for automatic or cat-powered food dispensers. I was intrigued by this hamster-ball looking thing, but I didn't like the idea of a non-stationary feeding device.
On instructables I found an awesome food dispenser mod, and decided I should go out and buy the little feeding dish base and make it.
Before I got that far, however, I was struck with a far simpler idea. I often see Igby reaching her little paw underneathe some cabinet to retreive kibble she'd knocked there. If I put a bunch of food in something she couldn't get her face in, it would slow her down and solve my problem. BAM.
tl;dr: jars are handy in so many ways.