Not trying to be a rule bender here, but if you wanted to share food, I'm sure you could allow people to have some if they asked for a taste. xD
There would be no selling, and the Artist Alley wouldn't be a good place to do it, but my friend and I once bought a ton of candy at Uwajimaya and just sat down with a huge pile and a sign saying "candy for hugs", haha. I think people would be more cautious that way, because a general thought is "if I pay for it, it's safe".
Of course, I'm not saying there are no rules against this, it's just a thought. I had the thought of making lots of mochi, for us to eat of course but also to share in case someone wanted a bit too. That's one thing I learned in elementary school. xD; "If you're gonna share, bring enough for everyone."
I think a free candy bowl would be acceptable too, wouldn't it? I don't think you're allowed to sell another company's product without their consent, anyway...
I know this is totally strayed, but...yeah xD;