Hey there! Quite a bit of neat stuff in this submission, especially in Winter Break.
My feedback to you - I think with regards to the theme, I'd say that the music overall is a little too "involved" to be background music IMO. I'd say this probably stems from the fact that the drums are pretty prominent in the music. Not necessarily a bad thing, just maybe not appropriate for the theme. I think some of the repetition in the harmony helped ease that a little bit.
Thanks for sharing what you've made, keep up the good work :)