About the map collection Comms.
For years now I have been storing maps in white plastic drain pipe.
It is fairly cheap and pretty durable. The caps cost more than the pipe did last time I bought some.
I can roll and stuff a lot of maps into a 4" plastic tube.
With the caps on the tube the map rolls can sit in the back of a closet or in the shed rafters with no worries about them getting torn or mulched by mice.