I used a $7 rubbermaid tub for the cabinet and some clear acrylic I had lying around and just sealed the window up with liquid nails. I also ran a strip of weatherstripping on the top edge of the bin for a good seal, and I haven't seen a stray bead yet. It's been really easy so far to pour the beads back in the plastic container with a funnel. Harbor freight also had sandblast gloves for $6.00 that I just duct taped in place -- they're pretty solid.
The only other thing I had to buy was the blast gun from Northern Tool. Harbor Freight and Northern Tool are both in the city so I didn't have to order anything. Here's the gun I used: http://www.northerntool.com/webapp/wcs/ ... 3137_23137
And some pics:



...and for my first test I took 36 year old enamel off some tank badges:

-phil
