Whether you're looking for a part-time coding gig or perhaps even some SEO optimization, there's certainly an opportunity in your local area that leverages your immense knowledge of computers. Small business owners everywhere are often looking for help setting up their local networks or building their website and getting found by potential customers. If you have experience with computers, then you can probably help them out!
Remote or virtual part-time jobs in computers are also incredibly common. If you're not constrained by looking for a local position with a physical office you can open up a whole new world of opportunities. Virtual or remote computer jobs are growing in popularity every single year.