Fellow 3D Printing enthusiast and vlogger Andrew Mazzotta, tired from sourcing upgrades on 8 different websites and thought "wouldn't it be easier if there was just one place for all these things." So he created 3DHacker.com and invited anyone to showcase their projects and builds and offer them to interested parties. You can host whatever project you want on 3D Hacker and anyone can find your project and get in contact with you if they want one. 3D Hacker is open ended to a fault, but that's good because it means I can offer things for people who don't have 3D printers, like my RoboAction Chessbot set.
So check out 3D Hacker and comment below what your favorite project is on it and maybe I'll write about it in the future.