Other thing you could use are plastic gutter guard from any home store. I got plastic hardware cloth from a Lowe's, it was outside; I just asked a service person (in december no less) where they had it, it was stored outside, they just pointed the way and opened the door for me.
I remember someone else telling me a few years back about how someone was making a wet grow log of sorts from blocks of floral foam covered by sphagnum, to grow phrag besseae mounted. I think I'll ask about this in another thread