2
Mar
2013
If you prefer the feel of writing or sketching with a freshly sharpened pencil and are fastidious about keeping hydrated, this clever piece of synergy is going to blow your mind. Designed for use on standard plastic water bottles, this pencil sharpening bottle cap is a brilliantly obvious way to deal with pencil shavings. More » 
A Bottle Cap Pencil Sharpener Is Pure Genius
(Via Gizmodo.)