I kind of miss being able to see my friends every day. Now when we live far apart, work and just have different lives then back when we went to school we just don't see eachother as much anymore.
It's also still weird not to have the summer off and just do whatever you want, but I don't miss summer break that much. Nowdays I get antsy without having anything to do so.
Other than that, there's not much I honestly miss.