would just slightly over 7cm wide do? If so how many would you need?
I have a pile of little platic lidded cylinder shaped tubs which we get pakora sauce in if we get a takeaway - I've been saving them for years knowing they would come in handy eventually and I use them for weaning but I have way more than I need and I'd be happy to send you some
Not quite what you were asking for, but I have one of [[ http://www.thermosonline.co.uk/products/Thermos-Foogo-Insulated-Stainless-Steel-Food-Jar-Pink-290ml/Baby---Kids/products/3889 these ]] for dd's food, and it stays warm for ages. Just heat really hot just before you leave the house, put the food in, then put the lid on straight away.