Infinite baffle is another excellent option, if:
1. You have your own place;
2. You have a space > 10 x Vas that can be used as a cabinet;
3. The space should be kept near room temperature;
4. The space doesn't have hinged doors (that slamming can blow out the cone).
The Cult of the Infinitely Baffled website has all the information you need to get started.