In a similar challenge where a knot "board" was called for but needed to be portable, the board was printed from a word processor document onto vinyl sign poster material, the knots tied, and then tied ("stitched" added 15SEP2012) in place to the vinyl. The resulting "knot soft-board" could then be rolled up, placed in a cardboard tube, and stored in the pack's knot training bag. When needed it is unrolled and laid out or hung for display.
In tying, liberal use of buntline hitches was used.