Warping a long frame and then playing with patterns is a great way to train the fingers in the motions of sprang.
A trick I learned from Carol James: If you take a variegated skein of yarn and wrap it around the frame in a circular warp the same length as the color repeat in the yarn, you can get regions and bands of similar color. I tried this several times before it worked, but am pleased with all of the results, even when it didn't turn out as expected.
One of the suggested projects in the SprangLady SprangAlong is a Möbius scarf. Here are my two attempts, one with a pattern from the 2023 SprangAlong and the other from an early project that was the right size.
A warp of 6 ft (2 m) or more becomes a canvas on which to experiment with and create a range of designs. A couple of these were planned out, but many of them resulted from asking "what happens if..." and then trying something.
Most of these warps were 9-12 ft (3-4 m) long.