If Kiruna pans out, heres some things to do-
The Kiruna Ice hotel- Built in Jukkasjärvi each winter since 1990 and has become a major tourist attraction.
That may not work due to timing (I'm not certain how long the ice hotel stays after being built, but producers have been known to "creatively adjust" the schedules of things like the Holi Festival, so why not?)
Every winter the Snow Festival is held, and every summer since 2000 (The city's centenary) the Kiruna Festival has been held (See notes for Ice Hotel)
A key industry of the area is Iron Ore and much of the town is dependent on mining- Possibly a task revolving around that?
Kiruna hosts the Sweden Spaceport, and the Institute of Space Physics
The church in Kiruna, built in 1912, is one of Sweden's largest wooden buildings. It has separately been voted Sweden's best looking church and the foremost Swedish pre-1950 construction.
All that above is unconfirmed, completely speculation, and probably nowhere near the truth