In Swedish, do you have many other degrees of way to say "skit" that are "less offensive"? Like as you're aware we say crap, or just silly little kid words like doodoo or what have you.

I've never thought of it like that, but I do believe you're right - there's no real stylistic equivalent of 'crap' in Swedish I can think of, not with that meaning. (There is a kiddy word, but that's considered embarrassing for adults to use, though nowadays many hip young people do.)