[Politicalmom]

Better yet, "accidently" re-shelf them behind the dustiest books to be found. : )

[Quix]

That sounds like the best idea . . . not your nickel for being overdue if checked back in, first.

from my library experience.

high shelves and bottom shelves tend to also have less browsers.

And, one could figure out what to do with the book in an envelope relative to the bottom of the 2nd to the bottom shelf--with no prints, to be extra safe.