This is what I think about.

Pickpockets. Constantly.
Mullets. Constantly.
Architecture. Constantly also.
Outrageous clothes.
Metro directions.
Druhbsky Narodiv. My stop.
Celsius.
24-hour clocks.
Exchange rates (8.88 today!)
Teaching schedules.
Adventure planning.
Not looking too American.
Not sounding too American.
Not getting too lost.
Converting dollars to hryvnia.
Finding uncarbonated drinking water. ("No gas?")
The Cyrillic alphabet.
Soft L's.
Photographing.