1. Join civil society organizations. There are loads of these crying out for members, just pick the issues that concern you the most and become a member of the group(s) that campaign around these issues.

2. Shop ethically, buy local produce where possible and try to avoid the supermarkets.

3. Get active in letter writing, email and fax campaigns. Write to your political representatives (local and national) about issues that concern you. This is much more effective than many people think.

4. Attend demonstrations. This is great for morale and gives you a chance to meet people with similar and differing views.

5. Network widely.

6. Patiently explain issues to the non-committed.

That's all for now, any more ideas?