I picked up a new lid for a one quart Nalgene bottle that has a compass built into it. The lid is made by Nalgene and the compass by Brunton (the compass is labled with both company's names - a pretty good partnership in my opinion). The compass is fairly basic but has a rotatable, graduated ring.

I already carry a Silva compass but this seemed like an easy way to carry two. Combined with the cup nested on the bottom of the Nalgene bottle (purchased from Campmoor) I have the start of a "quart-bottle survival kit" (maybe for inclusion in my BOB). A PREMAC water filter looks like it might fit inside - does anyone have experience with these?

I'll experiment with it a bit and report back what I come up with. Any other suggestions are welcome.

Terry