Testing out using newspaper print roll for animation paper. It's not strong paper, but you can do long background pan layouts, and it's the right amount of translucency. It's off-white so it's not so hard on the eyes too. I'll just have to reinforce the peg holes and decide whether to continue with A4 size, or to find a new standard. A4 is slightly too small, so I might bring it up to 12 inches across for the frame.