We always need a place to take notes. Nowadays our phone is the place to do so, but if you are old fashioned for real ink and paper then a field notes booklet is a smart choice. I got this one from a maker who's youtube channel inspires me " Foureyes " and wanted a really cool cover for it. For more info on this and the source files look here: http://www.openbuilds.com/projects/field-notes-cover.74/