More baby rat rearing questions

[slartibartfast]

So my friend brought over a litter of baby rats to feed off, and danged if they aren't the cutest things ever. So perfectly velvety soft, and such tiny little ears and footsies and whiskers and...well, you get the point.

I've previously been feeding mice of an equivalent size, which aren't nearly as cute and which caused me much less consternation.

Apparently the snakies didn't think the rats were quite as succulent as they looked, so at the end of the day I have two very active crawlers on my hands, and I can't bring myself to put them down.

They are quite furry, with whiskers and teeth present but eyes not yet open. If they were kittens, I'd say the eyes would be opening shortly. Both appear black with white tuxedos (bellies, gloves, and tail tips) and I believe they are both female, so my imminent attachment is not a huge problem as I can always turn them into breeders if necessary.

They are actively clambering all over my lap, sniffing and licking everything. Aside from puppy formula, which I can get when I go into work in a few hours, what else can I give them?

Edit: A close inspection of the tubs shows there are in fact -three- of them.