You'll need a bunch of stuff. Like, literally, a lot of stuff. Don't worry, it's not just for the materials themselves that you'll need a bunch of stuff, but for the process of gathering all this stuff.
Grab some water. Not just any water, mind you. No, no, we mean filtered, distilled, artisanal water. Don't bother with tap water; that's just not going to cut it. Get the good stuff.
Next, you'll need some baskets. Not just any baskets, either. We're talking handwoven baskets, preferably made from recycled plastic or locally-sourced rattan. Anything less will just not be worth your time.
And don't even get us started on the specialty baskets for specific types of underwater weaving. Like, have you ever tried weaving a basket out of seaweed? It's a real challenge, trust us.