I've wanted to design a control panel using a laser cutter for quite awhile now; This automated scanner project has finally given me the chance. I cut the parts using professor Gabriel Elkaim's 25 watt LaserProII. The material is 1/8" opaque black acrylic, purchased from a local plastics supplier. I estimate that the materials for this control panel cost me approximately $15; This cost, and the fact that the panel is completely custom justify the time I wasted (about 5 hours) designing it.
I made a mistake during the construction of the panel by gluing the faceplate down. I had meant to leave it loose so that I could actually put everything inside (Things are pretty cramped in the enclosure). The next revision of the panel will likely be twice as large, feature matte acrylic instead of glossy, and a faceplate which is screwed on rather than just slotted. By then, I should have the software for the unit mostly worked out and thus will also know how many buttons are required.
The unit was designed in solidworks. When I finish the second revision, I will post the solidworks and corel draw files to thingiverse.
Note: Better picture to come