Recently folded the Geneva Box using 8.5″x11″ paper.
I went on Hexagon/how to, wikipedia to find a real easy way to make a hexagon as a starting template. I cut up some thin cardboard from a used cracker box. The hexagon was a bit smaller than 8.5 inches square to begin with, which made the model small, but very nice, cute. Made one yellow and one blue so far, I like red, so will try that and then I will go looking for some really large paper to make a large model.
I really like the Geneva tato box, for beginner folders a little tricky, but i encourage them to stick with it and the other great models you provide on your outstanding sight.
happy folding. W.Y.