Here's how you can get to make some .obj files out of real life objects.
What you need:
-An 8$ Laser Edge form any Hardware Store;
-The David scanner program, from
David 3D Scanner
-.Net Framework add-on from Microsoft, if you don't have it installed already;
-Some printed patterns
-And stuff you'll find around you house, like Styrofoam boards, and UHU Por to glue it, for
If you don't like to change the Edge's batteries all the time, better add a Tranformer with 3V
output, a common Mono plug, and some soldering work, too.
For an easy scan, and good results, you better have an Airbrush around, to cover the
objects with a wash-away layer of white paint, common Gouache will do fine.
Baby powder is said to give good results on stuff you don't want to paint.
This other Instructable shows you how to make a neat laserline, so have a look at it, too: