Thought I'd share this, it may help some one.

I was looking at cabinets but even the cheap ones weren't in my
budget. Next, I considered making one, but there's a lot of time and
fabrication involved ...... then I saw it, siting right there in my
garage! One of those oversized Tupperware storage bins, about
30"x24"x18" and vaguely see-through (sides & lid) to boot.

I cut a hole that would just be big enough to gently squeeze my hand
through, (the glove is put on inside the box) 2 holes in the base for
air and sand lines and a larger one for the sand return.

The trick is, I only have one hole for my hand, the other hand lifts
the lid to postition the gun in the correct place, close lid & pull
the trigger. You're effectively blasting blind, but repositioning your
hand takes seconds.

I sandblasted a cylinder head from a 250 cc dirtbike and it came out
beautifully (using the sand from my daughters old sand box). I did
this in my garage because of the cold, and the spill was negligable
and the sand recovery was good. The best part is that it's space
efficient, light and can still be used to store stuff in and then
stacked.

Now, only problem is, to explain to the wife what happened to her
storage box!

P.S. A good dust mask is a must.