[lizmat]

For the German colloquialism challenged (adapted from a GT translation):

An egg-laying wool milk sow is a colloquial expression that describes something (a thing, person or problem solution) that "only has advantages, satisfies all needs, meets all requirements"

[rurban]

This is an image of this animal http://bleaklow.com/images/2003/p6_cover.gif

I also have a similar pic for pony, which is actually performant, and not designed by committee.