What are you skilled at? What can you do? When I was in ministerial school I couldn't really work a job, but I did yard work and handyman stuff for people on occasion. I put a door on a garden shed for someone, did a wooden ceiling in an a-frame farmhouse, put in a garbage disposal, some landscaping . Little stuff like that.
Are there elderly people, especially widows in your neighborhood. There's so many little and easy things that elderly person needs done, that they used to do themselves that they can't anymore. Some that are really simple jobs that they're really needing to have done. Also a lot of women of that generation relied upon their husbands to take care of all that stuff, that they're clueless about.
When I was starting my church in Florida after ordination, I was working part time in a Radio Shack, that was right in the midsts of senior citizens, and some days you'd want to cry, some of these elderly women would come in needed just batteries put in their remotes (and sometimes needing them re-programmed) and their cordless phones. And they'd just be lost, because their husbands used to do it all for them...And some like changing batteries in their ceiling mounted smoke detectors, or even lightbulbs they weren't physically able or where scared to climb up the later to do.
I wouldn't be surprised if they're weren't people in you neighborhood like that. You could probably charge like 25 bucks an hour, and spend an hour doing all those little honeydew list stuff for an elderly person, just changing bulbs, batteries, resetting clocks and vcrs, and make someone's life happy and a few bucks on the side.
You could have four customers, and 4 hours worth of work for the mall jobs like that and make 100 easy...or they might have bigger stuff that needs to be done....heck even things like going shopping once a week for them or something like that. And you could have ongoing clients, that you did stuff like that for weekly.
You have to figure out a reasonable rate...I think 25/hour for an odd job list isn't bad, and come up with reasonable rates for other things like grass cutting or whatever.
You could do ok, and not tie up too much free time doing it either. Just doing those lights and batteries would mean so much for some of them, and help b ring a few bucks in for you.