Figure out how to collect the necessary materials and install a self standing security system on houses. Keep it simple: An array of beams and receivers covering the perimeter of the house; when any beam is broken an alarm sounds inside. Go door to door and sell the system with installation.
If you have the writing skills and something to say, start a newsletter. Start with a few pages stapled together and charge an appropriate price. Work up from there. If the topic of your newsletter is related to freedom, DP posters might contribute material.