If you notice the length of each episode, you figure out pretty quickly that these two mini-sodes are really just cuteness. The first is a neat one about the bread and alcohol in the show, while the second one is a fan-service of Horo showing how to stretch. No real story to speak of, and with that, not much in the character section. The art was done by one of the animators of the show, so while it is slightly different from the main style, it's not particularly noticeable. They used the sounds that you're probably used to if you've seen the rest ofSpice & Wolf, so no surprises there.
Overall, it's pretty cute, but mostly useless fluff.