T shirt, mugs, baseball caps etc. to your own design
This is a positive "experience".
I wanted to order a bespoke T shirt for my grandson. I eventually settled on designing and ordering one from spreadshirt.co.uk. It was simple and they proved efficient; the quality of the T shirt was good. Although it has the co.uk domain the European company is based in Germany- this has no impact on using the site.
As a result, and after browsing their site, I decided to open my own "partner shop".
There are links on this page.
It was relatively painless to do. They have a number of video tutorials- accessible from their site or on YouTube- and a section tucked away for partners called "Spreaducation". They also have excellent email support should you require it. I had problems with a vector graphic design (before using Spreadshirt I knew nothing about digital design, printing, vector graphics etc.) and their email support saw me through. There is a Users Forum too, so "partners" can learn from one another and give feedback etc.
(By the way, "learndigitaldesign.com" has a great array of video tutorials on…yes…graphic design, including details on how to use the free program "Inkscape"- a genuine alternative to programs such as Corel Draw or Adobe).
Once this was set up I also opened a partner shop on the .com site- based in the USA.
Again, a simple procedure.
The financial rewards are not great but it is fun to do. Designs can be sold separately from products; you can put your designs and/or products on the Spreadshirt Marketplace for all to see; you can keep your products and designs solely for use in your shop; you can make your shop public or private.
There are plenty of such sites out there. I only have experience of Spreadshirt. From what I read on the Forum other customers have tried other sites and return to Spreadshirt.