Did you know you can make money parking domains? Yes, you can, although you need to have quite a few to see much money come in. There are services that allow you to park your domain, and when people search for your keywords, your domain may come up; if the visitors click on one of the ads these services put on your parked domain page, you make money. Some of the services want you to have at least 100 domain names, so if you want to start generating domain after domain, get a list of domain extensions from one of the domain registrars, and play with fun names to come up with the requisite 100.
Before you invest in domain names, start going to a free domain names forum to get advice from the seasoned participants. As in any new business venture, there will be a learning curve, and forum participants are usually very helpful and could give you good advice on how you can make money parking domains. I myself love to think up new domain name, and should give this one a shot.