Makes you realize how much you miss strange and obvious things.
Strange things being things you didn't realize you liked, not things that are bizarre. For instance, to-go coffee or tea is a strange thing that I miss. I love getting a large tea or coffee in the cooler months and carrying it while walking to and from destinations in the chilly weather to keep my hands warm. Yes, I wear gloves, but there is something so nice about a hot tea to sip on slowly while walking to a meeting.
Obvious things being things you knew you would miss and then remind yourself, duh, of course you would miss this/that. For instance, my friends :) Just thinking of them back home* makes me smile and ache for them at the same time. Two of them in particular make me smache all the time Jen and Meg.
*home = Some days its Cleveland or C-bus, others it is DC or NY. It is places I have never lived but love, like Paris. And, believe it or not, it is even Switzerland at times :)