WTF?? Cutting apart ribbon cables and braiding them and then reconnecting them? Talk about a nightmare, especially in getting the connector put back on the end with the wires going to the correct pins.
As for the OP, I never use them to tie garbage bags closed, but I have tried pretty much all the other uses listed.
And the birdhouse in my backyard is currently hung by 2 of the super long ones twisted together.