Stattys, the company that owns Noteboard is closing their US branch. They have a 20% off sale using the code
“we-wish-you-well”
I have one and just in case, bought another using this code.
I am not affiliated with the company.
These were all the rage in the G+ days. If you don't get one now, you'll be paying European shipping prices to get one.
It has a grid on one side and blank on the other. Use a wet or dry erase marker and you've got a portable flip map for minis or just drawing a map to show players. Great for use at convention games.
https://thenoteboard.com/