Necessaries: Pocket Swatches

I keep a small collection of usefully colored pocket squares in my closet.  Most are a lightweight satin that doesn't hold its shape especially well, but that's only an impediment if you are trying for a large, sumptuous tuck that reaches way up from your jacket pocket. 

I got each of these at Filene's for about $10.  Look for squares with a bit of heft or texture to them so that they keep their folded shape a little bit better.