Trying to "keep it cheap" I got a Plano nylon bag at wal-mart (green #1330 or 1350) - 13 bucks. Got some pvc thin-wall pipe - at home depot - what is used on central vac systems - 3-5 bucks. Silicone the cut to size tubes together - I believe I got 15-18 slots in all. Plus the bag has two side + 1 front compartment for misc. storage.
Its not large enough to stow large plugs or pencil poppers upright, but serves my purposes so far.
I'm keeping an eye out for a similar, but taller bag in just the right size, to do the same with for the larger plugs and poppers.
Hope this helps a little.
