Well, I have finally completed my Sig flight box. What do you think?

Let's see some of your flight/field boxes, would love to see'em. It will also help me in some ideas of how to finish setting mine up and what other components I need.

Couple questions:
1) Is it safe to keep the two external terminals connected to the battery for an undetermined or extended period of time of no use? How often should I disconnect them?
2) Do I need to remove the battery clips to recharge my 12v battery? Or can I recharge the 12v through the external terminals?