I needed a dry box that would hold two large spools (1 kg). First I needed a clear plastic box which I bought from Target (see photo of label).
I tried several spool rollers but did not like the design of any so I made my own. Next was to get the filament out of the box but this time I found a good design (http://www.thingiverse.com/thing:318580) but had to make a change to the top cap to have a tight fit on the 6mm tube that the FlashForge Creator Pro uses. Next I needed a desiccant box for the indicating desiccant that I use so once again I made my own. I also wanted to identify what type of filament was on each roller so I created some tags that fit the box. I glued magnets to the lid and labels so they remained in place.

So you so you don't have to go running all over the place I will provide all the parts that I used. I made two large spool rollers. The bearings, rod and shaft collars and aluminum tube I ordered from the large online retailer Am*$on (Amazon), because I am lazy. Like I said before the box I got from Target.
You need:

(1) 8 Bearings 608ZZ 8x22x7 pre-greased
(2) 8mm shaft 30"
(3) Aluminum 6061-T6 Seamless Round Tubing, WW-T 700/6, 1" OD, 0.87" ID, 0.065" Wall,
(4) 4 or 8 8mm ID Shaft Collars (one or two spool rollers)
(5) Two inside parts for the filament caps http://www.thingiverse.com/thing:318580 and the top cap with my mod. I have included the lower part of 318580 so you don't have to go looking around
(7) a desiccant box of your choice (I have included one above)
(8) a plastic box that seals well (see photo of what I used)