That's where I'm torn---I need something safe, but something that is either too tough for her to chew on or something digestible...and I am not sure it exists. I know that ropes can be a lot of fun for them and I need something to make her toys etc (she prefers rope to stainless when it comes to hanging wood)--That having been said, she likes to chew/mouth things (like leather, her feathers, my hair etc) and although she always spits it out, I am not sure that I trust her:
A few months ago, I gave he an almond in the shell, and she ate a few tiny bits of it (the shell)! Ever since, I have been worried that she might do the same with non-food items or other non-digestible materials when I am not around to notice. I am afraid that if she accidentally ingests enough little particles of junk that she will end up with a blockage years later.
Currently, she is shredding a sea-grass foraging wall and she has made piles of seagrass everywhere...I can tell she isn't eating it, but it just seems impossible to spit out all of the tiny little fibers, even though I'm pretty sure she does her best...I think about myself eating sunflower seeds in the hull lol...Even if I try to spit it out, inevitably, some fibers get swallowed....then again, she is a parrot and I'm not, so maybe I'm over-thinking it?
I mean, if you think about it that way (my worries above), really nothing is safe, but birds need to chew...So am hoping that in small enough amounts, certain fibers will eventually breakdown internally without producing blockages.