Welcome to the Quilting Board!
WOW! I used to macrame but supplies were so hard to come by. I'll have to check this sight out when I have more time. Thanks!
I see you are new to QB. Welcome from Washington. :D
I usually macrame hanging pot holders. I have masses of drooping plants that I love, and got bored with the ones planters available in stores. I use the thinnest nylon cord I can find. I get a large round key holder and use that as the starting point. I can use any kind of container, and have. Even a very old metal child's potty that I pounded drainage holes in!!
This usually lasts enough years so that when I'm tired of the plant and sell/give it away, the cordage is still in good condition after a spray bath with a touch of bleach.
Inside I take LONG LONG lengths of plastic wrap from Costco, stretch and twist and have a colorless and strong line I can put anything on for decoration in windows to let sparkling colors flutter through the room in the sun light. Works for hanging plants in water, pretty in clear containers.