Being a certified electrician is completely different than being a licensed, bonded and insured electrician. I have seen so much electrical work done by handyman, “certified electricians”, homeowners etc to last a lifetime. To promote making extra money on the weekends and after hours by being a “certified electrician” as you put it, is a disservice to your readers. Electrical work is not a hobby. Electric has no conscience and is very dangerous.
If you know your way around a motherboard and you're adept at troubleshooting people's problems with their computers, you might find yourself in high demand. Lots of people find themselves not knowing what to do when they encounter various problems, or they simply need help accomplishing some task, such as setting up a VPN service or installing a back-up hard-drive.
If you're savvy with computers and coding, you may be able to charge $50 or more per hour helping businesses with their websites. You may actually create a corporate website, arranging it to work efficiently, building databases, and designing the site structure. More specifically, for example, you might build a page that collects information from site visitors, enters it into a database, and then sends a communication to the visitors.
If that sounds like too much technical information for you, there is an easy button – Google’s advertising platform is as simple as signing up, enabling (on Blogger) or pasting a small code on your website, and allowing the advertisements to automatically roll in. The problem with this program is that you don’t get any commissions – and you don’t get to control the ad content. This is useful for some, but powerful users will want something a little more robust.