Lost my keys, what can I do?

Well i misplaced my keys today, searched all day for them and no luck. I never made time to get a spare made up, but luckly I have a spare ignition key. The problem is I've got a nice stereo and seats, and can't lock my doors at night or while im at work. Also, I have not had the money latlely to get an alarm installed. Is my only choice, to buy a whole new/used set of keys and door/hatch locks, and swap all them? My plan was, when i get an alarm, to get one with power door lock option so they would lock/unlock with my alarm. A couple weeks ago my switches stopped working for my locks on both sides. So I am going to have to wait until I have time to hunt down my wiring issue before the alarm. But what should I do about my locks for now??