Sketchbook Time

I love Strathmore's Toned Gray paper!  It's so much fun to use a black Micron along with a white gel pen, and shade with both a graphite and white charcoal pencil!  I was inspired to do a border after recently teaching a border class.  Then I got further inspiration for tracing two tiles and tangling them from the work of Maria Thomas in The Book Of Zentangle.  What's in your sketchbook?