I can't afford good rubber bands. And if I had a nickel for every time the ones I had broke just when I needed them . . .
So when I am at the Dollar Tree, I get the 6/$1.00 packet of head bands. Today was potting soil. I have also used these to keep the bag inside the trash can, tie up tomato plants, bundled cords and chargers, secured my flagpole in the wind, held doors open when I was moving in, and tied my towel to the oven door.
They are versatile and so cheap. And to be honest, they smell much better than rubber and don't hurt my hands if they break! N-JOY!
Source: Just my need to use what I have at home