I read somewhere that rice cakes were a good first food so I picked some up at the store. I couldn't find unflavored mini ones so I bought the big ones, selecting the salt-free version. I was disappointed when I later read the package to see that there wasn't much to recommend the rice cakes nutritionally. I guess they are a whole grain, but there were no vitamins, minerals, protein... Oh well, I figure I can always spread stuff on them. Maybe they will prove an easier way to transport slimy things like avocado and banana? For the first experiment I gave Buttercup a few strips I'd cut off the rice cake.
After she smashed the strips of rice cake into smithereens I was impressed to watch her still going after the smaller pieces. Thus far she hadn't managed to pick up small chunks and get them to her mouth. I think it helped that rice cakes become tacky as soon as little hands get a bit of drool on them.
Buttercup swallowed all of the rice cake but the tiniest crumbs (unless she's hiding it somewhere, and I wouldn't put it past the clever girl).
PROS: easy handling
CONS: low in nutritional value