The first thing that you should look into doing is something that is completely new. There is so much to experience in the world that you can start by doing something that is different than the normal things you do. If money is an issue, there are probably many free new things that you can get involved in.
Try to become part of new groups and clubs in your local area. With the internet it's easy to find a wide variety of sites that have clubs that are doing things in your local area. This will help you do more things and meet new people.
Go back and start doing something that you used to love. Many times there are old hobbies that haven't been done in years. Start doing one of these again and see if it's still fun.
Connect with old friends that you used to have. Surely there are more than a few that you haven't talked to in quite awhile. You might get old friendships started again and find some new activities to do together.
Pick a subject you have always wanted to learn and start learning it. With the use of the internet, it's very easy to do this at low cost.
If you are bored, you might need a break or vacation from your normal routines. If you can't afford this, try taking a day or two off and relaxing doing things that aren't too stressful.
You might be bored because you are tired of just entertaining yourself. Turn your focus outward to the issues and problems going on in your local community. Volunteer and help out so that you can be helpful to someone else's life.