I would recommend either
line, as 34 suggests, or flat nylon strap sail ties. Leave 'em in either way. Not a fan of the bungee ball and loop/socket set-up. When part of it fails you've got nothing to work with and have to scramble for a length of small stuff. Stranded
line with a couple of Matthew Walker knots looks handsome, and if you use synthetic you can pick your color. Good winter project in front of the fire.