It doesnt take much, go to the local shelter and pull an animal before they are put to sleep and share your home with them until you find them a home. Its rewarding and you save a life by just giving a perfectly fine animal just some more time. I do. Sometimes they let you take them for free if you tell them you are doing it to rescue them.
Offer to transport death row dogs to rescue, huge underground transport network of people shuffling death row animals around the united states to save their lives. A ride means the difference between life or death. I do it.