If you have a skill and are good with people, then offer your services to someone. It should be unique and something you do extremely well.
As an example, when I was young I did very simple tutoring for seniors on computers, offered to setup home networks, simple websites, etc. You’d be surprised at how much people value certain skills that you wouldn’t think are worth anything (i.e. teaching an instrument, even simple technical work, etc.)
It’s intimidating to start your ‘own business’ but really it’s not – you just need a cellphone, e-mail, a service, and clients. Find clients through Craigslist, pro bono work, and friends of friends (but not your immediate friends or family). Charge a rate that makes you want to work, remembering that you can always charge less but seldom charge more.
When you’re starting out, always say yes.
@susanc this advice applies to prostitution too!