@Philip Taylor I was merely using medical science as an example profession. It’s quite obvious that you don’t have any professional courtesy and downplay professions in which you don’t understand. Logo design isn’t just logo design. I don’t know what the profession of a public accountant entails, or a lawyer perhaps, so I’m not going to give advice on matters that I don’t especially have knowledge in.
The second (and cheaper) path assumes that you have the design and dev chops yourself to build your dream software. Naturally, it’ll take more time to get your product off the ground, but being able to bootstrap the development of your software lets you retain more ownership in your business and be more in control of your path, making this a lower-cost, but higher time investment to make money selling apps.
I’ve tried a fair few things on this list and I’m a big fan of those side hustles that have the potential for ongoing passive income once you’re set up. For me, the most successful have been blogging and T shirt designs (I use Merch by Amazon but want to look into Teespring as you suggest). I’m currently working on an Etsy printable business, again for the passive income potential!
If you're a crafter, the internet is your showcase — and not only at auction sites like eBay. DeWitt Young of ObviousFront.etsy.com has had success turning her crafts into cash online. She has a booth at Etsy.com's Craft Mall, an amazing place where thousands of artisans and crafters offer their goods for sale. DeWitt turns salvaged parts from old TVs and VCRs into artsy necklaces, earrings, and figures. Colleen Jordan of wearableplanter uses 3D printing to create her necklaces called wearable planters.
Ebay is a bellwether. It's been around since nearly the start of the online boom. But, like any other platform, success can seem fleeting if you don't know what you're doing. Selling items on eBay, professionally that is, can be an art form. Getting people interested in your auctions isn't always easy, especially when there's hefty competition and low demand for what you're selling.
When it comes to at-home income, selling your unwanted stuff is the definition of “low-hanging fruit.” Even if you’re resolutely intentional in your purchasing habits, you surely have possessions that you can do without: old kids’ clothing and toys, disused sporting goods, out-of-fashion wardrobe accessories, electronics, entertainment, valuable but non-sentimental keepsakes such as watches and jewelry, broken-in furniture, dusty tools and outdoor equipment, and perhaps even big-ticket items like a motorcycle or second car.