Rent out a parking spot. If you live in a busy or congested area and have parking to spare, you might be able to rent out your parking space for some quick cash when you’re not using it. Simply advertise your open parking space online including details on the location, whether it’s covered or uncovered, and your desired hourly, weekly, or monthly fee. If you want, you can even use a site like Just Park or download the Spot App to reach more potential customers.
Once you have that problem or need nailed, the next step is to validate that idea and make sure you’ve actually got customers who will pay for it. This means building a minimum viable product, getting objective feedback from real customers, incorporating updates, testing the market for demand, and getting pricing feedback to ensure there’s enough of a margin between your costs and what consumers are willing to pay.
This may sound like a dumb idea, frankly, but a lot of banks these days are offering $200 to $300 signup bonuses to customers who open up a new checking account. The catch, though, is that you generally have to really open these accounts. You need to be willing to set up a direct deposit and put money in the account, and you often don’t receive the bonus for at least a month, sometimes even longer. On the other hand, if you were thinking of going to a new bank, anyway, it’s an easy way to make some extra cash.
If you have a good idea for an app, and the skills to create it, then producing your own premium app can be profitable. However, with so many free apps available, it may be hard to convince people to pay. If you want to go down the premium app route, consider having a basic free version to encourage people to download the app in the first place. You can then provide the option of upgrading to a premium plan once users realize how useful the app is.

Next, you’ll need the right tools. You can be as complicated or simple as you want depending on your comfort with audio equipment, but at the minimum you’ll want a microphone and software for recording your voice. Companies like Behringer, Blue, Focusrite, and others sell studio-quality plug-and-play podcast setups that can get you recording today.
Webinars are quite possibly one of the most potent ways you can make an exorbitant amount of money online. Russell Brunson often says that if you do a webinar every single week for a year, you'll be a millionaire at the end of it. You'll need an audience to train and you'll need to know what you're talking about. Of course, this usually requires having a website and some semblance of an online presence.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.