Sell baked goods. Working parents might not have the time to whip up a birthday cake or cupcakes for school parties. That’s where you come in if you can create tasty baked goods. A friend of mine who is a single mom started making cupcakes as a way to keep herself occupied while staying with her dad when he was undergoing chemotherapy. She posted a picture of her cupcakes on Facebook and instantly received several orders from friends. Now she makes about $200 a month making cupcakes for others who hear about her through word of mouth or see pictures of her cupcakes on her Facebook page.
Storage. Depending on how big your business gets, you’ll need ample room to store the books. You can’t get lazy or disorganized about it, either. You have to keep the books in good condition, and you need to be able to find them when someone wants them. For instance, if you list a book in “like new” condition, and then the pages get smashed during storage, you’ll be in a bind if someone places an order before you realize what happened.
Freelancing is working for a company or business but not being part of it. The best reason is you can work on your free time, and work from wherever you want, but there will be deadlines. Usually, the Work or tasks done will Goal oriented. There are online platforms where you can sign up and get projects for SEO, AdWords, Facebook Ads, Copy-writing etc. The Best place to start will be Fiverr, Upwork and Freelancer - Hire & Find Jobs
You can sell your ebooks through Amazon's Kindle program or Apple's iTunes Connect, which gives you access to a large majority of the digital-book reading market and the barriers for entry are incredibly low. You don't need to invest lots of money to make this happen, but you do need to invest lots of time, not only in writing the ebooks, but in marketing them as well.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.