CowTech Ciclop is a cool new $99 Open Source 3D scanner with many 3d printable components. The developers are Kickstarteing the project but it is open sourced so you will be able to make one yourself.
KS video presentation:
Go and check their Kickstarter campaign which is very successful:
https://www.kickstarter.com/projects/701089851/cowtech-ciclop-99-open-source-3d-scanner