I was on a charity DGR motorcycle ride today with 1500 others.
I was stuck at a light for 5 mins because the traffic was snarled up and I looked over at the guy beside me and he had two 8 inch slim cylinders on his bars with a paper map wrapped around each - he manually scrolled the map up /down winding it from one cylinder to the other. I asked him about it - "analog GPS" he said, unjamable by the Russians. Wish I got a photo of it.
Was a fun day, and finished at a brewery with live music and food. Got wet on the way home