Silk plants

[Tom P]

I was at a craft store the other day (blah!!!) and I saw these vines and vines and vines of silk plants. I was wondering are these alright to put in my enclosures? Just for some filler plants. I have live plants in most of them, but would a few silk plants be alright? How do they handle high humidity? Is there anything toxic in them that, if my cham gulped some H20, would hurt them? Just wondering, cause they are a lot cheaper than the plastic ones at the lcoal pet stores.