A simple DVD Holder. It should print fine as there are no Overhangs.
There are several different versions included:
CD-Halter_x_y.stl
where x is either 1 or 2 and stands for the thickness between the bottom and the first slot. (1 is thick, 2 is flat)
and y is a number that says how many slots there are.
And the .blend file for Blender users. You can adjust how many slot it shall have in the Array-Modifier settings.
You will need a bed with at least 12,5cm*20cm.