One of my big things is to educate people against declawing and get it outlawed in the US. (That will take time, I know.) I've put together some ideas to get a start and raise awareness and encourage others to get involved. Would love more ideas.
1) Wear anti-declaw t-shirts, tote bags, pins, etc.
2) Dress up your car with anti-declaw bumper stickers, car magnets, etc.
3) Stick an anti-declaw yard sign in your front yard.
4) Write to your local newspaper and ask them to print reasons not to declaw.
5) Hand out anti-declaw business cards, educational pamphlets, etc.
6) Write! Online and on paper.
7) Make a video explaining the harm in declawing.
8) Make anti-declaw posters and put on public bulletin boards, etc.
9) If possible, support vets who do not declaw. If for this reason you switch vets or turn one down, let them know the reason.
10) Write to your local politicians and ask them to consider a ban on declawing.
11) To anyone involved in cat rescue: Adopt out only to people who will not declaw, and educate as many people as you can.
12) Be nice to people. When you'd really like to attack someone because they would declaw, don't. That will only make enemies, and won't convince anyone to change their mind.
13) But do be firm in your stand. Don't let anyone tell you that you're wrong, that what you're doing is not important, or that you're wasting your time.
14) Be creative. Think up different ways to get the word out and educate people.
15) Don't give up! You're doing an important service, helping cats and people. We need all the help we can get. Every person counts. At times it will seem slow, but keep on. We've come a long way already. Let's go the rest of the way!