A sufficiently difficult hide, you're gonna have to work for this one.
This one was a little trial and error during assembly. To make returning it easier, flip the cache upside down, then put the log in the TOP of the container (which is now the bottom since it is upside-down) close it, and turn it back rightside-up. This cache is prone to its "innards" falling out, following this method will keep it from falling out without you realizing it.