I found this sweet WWI Russian map case and goggles at a local military surplus store. Those plus a leather belt for free were under $15! What luck!! Just thought I'd share and ask if anyone had a recommendation for how to make the leather on the case darker.
Most dyes or stains can alter the leather color (even if it is already finished), but scrub it real good so that it adheres. Do it in thin multiple layers. It takes a while and a few coats but its worth it (in my opinion).