Don't touch them, they could be alien body snatchers! (sorry, just saw that rerun on tv) You could try to smoke one...they look nicely rolled. I think some kind of moth cocoon which reminded me that the last 2 nights at lights on I inspected my ladies just at lights on at 9pm. Both times as I started to close up I saw a tiny white moth flitting around in my cabinet. I tried to swat it but it has so far eluded me. My great fear is getting a caterpillar infestation at 7 weeks in. Tonight I will tear the cab apart to find it. If it has already laid eggs I'm screwed.