Back in 2013 or so, I picked up a skein of banana fiber yarn that was dyed in blues and greens, was shiny and soft, and was more of a slightly structured roving than anything. I still have it somewhere - I made it into a crocheted scarf, using a larger hook (maybe and H (5 mm) hook and simple pattern.
I learned very quickly that the yarn/roving was heavy and, while beautiful, wasn't very strong. It would break under it's own weight and had to be handled very carefully. The crocheted scarf ending up too heavy to wear, even with just one skein and the lacy pattern involved. I frogged it, then tried a couple of other ideas. It's back to being a PIB until I can figure out what and how to make something with it. I'm thinking about couching it onto a fabric as decoration, or otherwise using it as a bit of "fancy pretty" on something able to back it and keep the stress off of it. It would make a nice edging for a jacket or top or couched onto a simple, not too full skirt.
If you were to be looking for something to do with the fiber, spinning seems doable, but a tighter spin, with less "artistic spinning" would probably be better. It is a heavy fiber, based on my very limited
experience, and might be recalcitrant to cooperating.