We put my dd's laptop lunch inside a lunch bag. We dont use the bag that you can buy with the system. So would that still be an option for you? There are these bowls. I have also seen retangular containers with plastic lids but i can't remember where. Stainless bowl w/lid
I can usually find this size container at the thrift store for $.50. I'd even splurge on new if I couldn't find it used, because Tupperware lasts forever. I have a bunch of the old orange and green containers that were my Grandma's (which she purchased in the '70's) and they are still in great shape.
I use Tupperware (my friend is a consultant) and it lasts forever and is mostly safe as they only use virgin plastic...I think that's the shpeil. Anyway, if one ever does break under regular use, they'll replace it.
I also use baby food jars. Yes, they are glass, but they are very durable. DF hasn't managed to break one yet at a work site.
Sarahmarried to Kyle Mama to Orion 08/07 and introducing Alice! 02/11 DCP to 1 busy munchkin! and a CRST too!