Just a quick little lunch acrylic sketch.  Honestly, I have had no time to do anything traditional these days, but you have to keep the hand loose and the mind engaged.  Bought some "rounds" (brushes for sketch) online from Utretch for Mother's Day gift to self and just now am playing with them.  This is done on a sketch tablet (real paper here, people) Strathmore Drawing Medium pad which I use as my traveling sketch book for now.  These are great; I carry a few 6"x8" tablets because they are light and don't get the attention a bigger sketch tablet might for discreet sketching in public.  The late Barbara Bradley of The Art Academy had encouraged me to use these instead of a heavier bound sketch book.  They can handle sketches as well as paint, altho paint colors are muddy because the paper is not the best quality.  I still like my Bristol Vellum papers which help to capture the colors in the fibers instead of dulling them out like the Strathmore sketchpads.