So a little bit like a spitz. They're very cute.
One thing whelping supplies doesn't seem to sell is the whelping box. Hopefully experienced breeders will tell you how to make one, and there are a few plans on the web, and apparently you have to make the floor of them lumpy either with that eggshell foam stuff (except puppies tend to eat it and crap in it. or lots of rolled up towels and things.
Di-dee's long thread about Pretty's pregnancy and whelping runs through details of the whole process including things she didn't see coming. And us telling her off for not planning better - but we got over ourselves.