What to use for a logbook for a waterbottle cache container?
I have a bunch of metal water bottles.
Being a water bottle, it is inherently watertight. I'm thinking it'd make a pretty decent cache container.
However, it's ~220mm tall, and the opening is pretty small - 27mm.
So, I can roll up some A4 pieces of paper, and they'll fit just fine.
However, I am foreseeing people having problems getting such a log out of the bottle.
I can put it into the lid to start with (like one must with nano logs), but eventually someone's going to just shove it into the bottle proper, and then it's good luck to the next finder
Furthermore, I want to be able to have swaps and a pen/cil. (Finding a decent-sized container with no swaps is just disappointing, but to also omit a writing tool? That's crap and I expect better of myself.)
A log of this size would take up most of the room in the container.
Any ideas? Advice for/against this type of cache container? Anything else?