So a really good project with nothing needed for it except some type of string or cord is fingerloop braiding.
this site has a bunch of resources and a series of videos to get you started! I've included the first one below that teaches you how to do a 5 loop fingerloop braid. I tried it out this afternoon and was able to make a cord myself within a very short span of time by just putting the cord holding loop around my foot and starting away.
Bonus pic of my first fingerloop braid below using the tutorial vid. Success!















