As a member of AYY you have access to many different services. At the services office in Otaniemi you can get your student ID card, pick up the AYY calendar, rent the sauna facilities for your parties and the AYY van for moving your stuff to that new apartment.
The student union also offers advice and guidance on many student life related issues and problems. The AYY specialists and service points are at your disposal. For a change of pace from studying, the different student associations offer a wide variety of different leisure activities. Then there is also volunteering, which can take you into international matters, communications or, say, educational policy.