Here's the video:
I created a file with 3 different lengths. 7.5", 6" and 3.8". In the video I make a 7.5" in tan, and 6" in blue sapphire.
I purchased a 12" cord and folded it in half for the tan, and ended up with a 11" cord for the blue. Shorter cords exist, I just haven't found one yet! If you happen to find a 7" cord for a good price, let me know!
and as promised here's the file: https://design.cricut.com/#/design/75521581