Hi!
Have not put a lot of them out there, but do have a lot of experience with toting and banging in the great out of doors.
One of the best for weather lock AND ease of hiding because of it's size and weight: a plastic, watertight lockbox that is sold in summer to carry your id, chapstick, first aid kit. They come on a lanyard, or key fob - about 4 x 6.
They come in assorted colors making the cammo a bit easier, easy to open and easy to lock.
You can get them on sale as first aid kits; or in summer the Dollar stores carry them.
