I was a Trapper Keeper user when I was a kid. If I remember correctly, mine was rainbow themed and was designed by Lisa Frank. When I got into high school, I had one of those splashed paint designed ones. I thought I was so Mod. There were many other designs in my locker throughout my school years. However, one thing remained the same across 13 years of learning. I always had a Trapper Keeper.
Kensington has just announced a new line of Mead inspired universal cases for 10 and 8-inch tablets. You may not be able to choose from the long list of licensed designs, but the fold-over front flap will certainly remind you of first period History.