While I was at CVS the other day (spotting all sorts of new goodies), I saw some Sally Hansen mini 4-pks that would make great stocking stuffers or present toppers.  There are four different sets to choose from: Diamond Strength, Xtreme Wear, HD Hi Definition and Insta Dry.  I believe they are normally $5.99 a piece, but are running 2/$10 right now. 

Really, the Diamond Hard is the most neutral or user friendly of the set.  The other three collections have much brighter and colors.  Really, at $1.25 a nail polish, it's not a bad little deal.