Finally learning that the weird beeping I sometimes hear mid-conversation on the phone is call-waiting, AND learning how to use it!
After-class conversations with cool professors that last far longer than expected and only end when you glance at the clock and realize that you've got fifteen minutes to get back to your dorm and, from there, over to the art studio. Setting up independent studies for next autumn; finalizing details for an independent project this term; basically anything where I get to go off to learn and do something cool and not be bound by traditional classroom constraints.
Aloe for sunburns.
Unexpected packages in the mail.