Product review (5 stars): Sticks to my refrigerator door so I can easily monitor the humidity
It's smaller than I expected which I'm happy about and it also has a magnet so I can stick it on my refrigerator instead of cluttering a table.  It comes with a tiny base that is separate from the unit itself.  Simply add batteries and it's ready to go.

I have dry eyes and sinus issues, so I wanted to monitor the humidity to see if low humidity is exacerbating my sinus infections.  I also like seeing the temperature at a glance.