My group prefers (okay I prefer) to have our units not all lumped into one box that you have to dig through to get what you need. For AA50 we used a Plano 3500 box to organize the units. Now with a few more units (type and quantity), I upped the boxes to the slightly larger 3650.
I've created labels that, when printed on normal 8.5 x 11 paper and then folded in half, get taped into the lid of the Plano box. The unit data faces the player when the lid is open. This cuts down on the "how much does this cost?" type of questions.
Download PDFs here: http://www.mediafire.com/?v7nbck7b0sq34qy
Download PNGs here: http://www.mediafire.com/?q4zs99dcsr4vjze
I hope that someone else finds these as useful as I do.
-Edited to correct Italian roundels