http://www.roblox.com/Factory-Set-Version-4-0-item?id=69629666
This is a model full of factory pieces which can be used to make all kinds of bricks! It's commonly updated, so be on the look out for updates! If you want to submit your own to me for reviewing, take the Blank Canvas and code it to your heart's content. If I like it and it works, I will add it to the model, and will credit you. Hope you enjoy!