Oh yeah, I always carry a bunch of (Tyvek??)
What you do is cut off and save the tags from mattresses and pillows. You know the ones that say "It a Federal Crime to Remove this Tag..."
WHOOOOO - scary.
Anyway, those tags are made out of what I think you guys are calling tyvek. You can't tear or puncture or burn this stuff. And the pillow/mattress tags are usually a great size.
You know if I ever get pulled over and searched by one of ILTB's cop buddy's...they're gonna put my a$$ away for a long time, for all those tags I have in my saddle bag.....