Product review (5 stars): Simply does what I need
I looked at a dozen humidity meters on Amazon and most get bad reviews.  This one was highly rated and I see why.  It is so simple - just open the package, pull off the plastic and give it a half-hour to get to room temperature (it was 15 degrees out, so the device was frozen when it arrived).

It is easy to read, sturdy, unobtrusive, and I believe it's quite accurate.  It's readings are on par with the numbers I used to get on my old humidity meter before it died.

Simple but works.  Sometimes no bells and whistles is the way to go.