I like puffs. Caloriewise, you cant beat them. They are like air. Mess wise, they are awesome and still get purchased for Sunday church - no crumby fingers.
Cheerios are, of course, the original 'puff', but they do not dissolve like puffs.
The only alternatives would not have the same features. So it depends on what you want ultimately. Less processed and a bit messier. Or dissolvable, but processed with a little sugar. If there are non sugar alternatives, I'd love to know!
I did try to make my own oatmeal cookie things and they were horrible. Since you can have like 100puffs for 25calories (or something) and babies burn a ton of calories, I decided not to worry about it.
SAHM to Magnolia May (09/10), Luke Russett (04/13) and expecting 11/16. Wife and best friend to my airman.