Tamandama attempts

[harpspiel]

Has anyone on here tried this?

There's an epiphytic growing technique, invented by an Instagrammer, called #tamandama. The account is encouraging people to use the hashtag for their own experiments, so I don't think it is a problem to reference here. It's adapted from kokedama, which uses LFS. I believe the original inventor uses tree fern fiber to create a ball, then wraps epiphytes and moss around the ball, and hangs it. Look it up - it essentially creates living floral arrangements, and it's gorgeous.

I'm trying to find a material that I can source easily, and also easily create a cohesive ball (without a silly amount of fishing line), with some water retention but good aeration. My local hydroponics shop has rockwool, and I have some matala chunks, so my first attempt is going to be a hollowed sphere of rockwool with the center filled with matala chunks (for superior aeration). Does this sound like it will work? Or way out there? Open to other ideas!

I haven't decided what I'm going to mount yet, but it will most likely include an orchid, a mini fern, a Peperomia and some moss. It will be hung in my grow tent, with humidity around 75%. Pics as soon as I assemble it.