Designs I manage to put together and that passes the following criterias;
- May be of use for someone else
- Not too chaotic in the implementation :-)
are published and made available on my profile at Printables.com.
I use FreeCAD and I always try to make my designs somewhat adjustable using the built-in support for refencing a spreadsheet in FreeCAD. I also try to publish the whole FreeCAD source files as well, to enable and promote further tinkering.