Toni, this is just ONE of the reasons I don't like taking classes. It seems to never fail when it is clean up time someone is missing something. Whether it picked-up by accident or taken on purpose; it doesn't matter, it's gone.
I worked two years longer so I could buy the quilting tools I wanted, like Creative Grid rulers, a new sewing machine, quilting tables, etc... In retirement, I don't want to have to replace things I worked hard to have just because someone is careless by taking something that doesn't belong to them or breaking a borrowed item. If that makes me selfish, that is just too bad.