One of the many hobbies that I have is creating computer graphis/3D models or "assets". These are, more or less, computer generated objects created from their real world equivalent. These "assets" can be used in a variety of areas, such as video games, news reporting graphics, architecture mock-ups/renders, animatics for movie productions, pre-visualizations, or just plain art pieces.
I sell these "assets" on a couple of websites but the website that I've seen most effective is called "Turbo Squid". They take half of the proceeds for hosting my files, so its not the best situation but decent. If you wish to purchase from the site great! If you would like to buy directly from my one of those "assets" even better! I usually will cut you a deal for buying direct because I'm gettting all the proceeds instead of just "half".
The graphic below, when clicked on, will take you to the turbo squid site and will bring up a search on all of my "assets" that I have available for sale and in the various file formats, such as .c4d, .dxf, .obj, .x, and of course .3ds.