I had a number of CR2032 lying around (purchased a bunch from Digikey, and the original container broke), so I quickly made a battery holder for them.
I created the design using CamBam (http://www.cambam.info/) -- really great CAM software, and it can do really basic CAD as well -- highly recommended. I then exported the file as a DXF from CamBam, imported the file using Visio 2010, and then printed it as an XPS file (the format recognized by the Full Spectrum Laser software). Files are available on thingverse at http://www.thingiverse.com/thing:166866. The whole project took me about 30 minutes to design, CAD/CAM, Laser Cut, tap the holes, and make, and about 2 hours to take a few pictures, upload it to thingverse, and blog about it. Whew... talk about documentation taking longer than it does to make it!