I've dabbled in drumming over the years, but I've never had a drumkit to practice on so whenever I feel the need to drum, I grab a pair of chopsticks and go to town:
Last week I actually had access to a drumkit, so I was able to test out my skills:
Not perfect by any means, but definitely an improvement over where I was in the past. If you want to drum (or do anything else that you don't really have access to), try to find an alternative that can help you practice until you get there. No excuses, just solutions.