mechanical 8-in-1 colored pencil at manufactum (via http://pinterest.com/pin/225816090/)
Vintage silver mechanical pencils
Wahl Pen 503C Sterling
The Pininfarina Cambiano Inkless Pen... "Its ethergraph tip allows it to write forever, without the need to ever refill ink. This tip gives it the precision of writing with a sharp pencil, with effortless strokes, while also leaving a permanent mark like your former favourite pen."