The Freeze Your B Off winter QRP sprint will be happening between 1400z and 2400z on 1 February. Operations are on SSB and CW on all non-WARC bands, and operating at or near established QRP frequencies is encouraged. The exchange is:
RS(T) + (state/province/country)+ name + power out + temperature(F)
If you want to get serious, there are score multipliers for field operating, alternative power, QRPp, and low temperatures.
http://www.hornucopia.com/contestcal/weeklycont.php#5085Stu