Off-Road Ranger I
This is exactly what I did, $2 at the local thrift store. It sits next to the computer desk for trip planning and is easy to grab when it's time to go out.It's also worth noting that there are countless "messenger" bags that fit the paper atlases for $5 or so at Goodwill. My "trip planning bag" is just such a marketing item my wife had lying around the house. Fits my DeLorme & Benchmark Atlases, Roadside Geology Books, etc. plus pen and other things perfectly.