Thanks everyone for your suggestions. Please keep them coming.
I don't plan to make my list of no-nos too long, but there are some things (like hot dogs) that will be an absolute no that I know she feeds the other kids. And I'm trying to broaden my DDs food choices (she's a typical picky toddler) so I do want DCP to offer her the foods the other kids (who are all like 4 and 5yrs old BTW) are eating...within reason.
And I am going to send a long a bunch of DDs favorites like veggie/pirate booty and earth's best crackers/cereal bars, etc because I don't expect that DCP will be shopping the "organic/health food" section for these and again, she's picky, and some days the only thing I can get her to eat is a rice cake!