On the borderline between hilarious and ingenious: This Pencil Cap, sold by Japanese stationery brand Tsukushi and manufactured in a spring factory in Tokyo, not only protects the sharpened tip, but allows you to carry it around like a pen.
The ¥1,650 (USD $15) cap was designed by Drill Design. (Note: For some reason, I couldn't get Drill's website to load properly on Chrome or Firefox, but Safari seems to have no problem.)
Join over 240,000 designers who stay up-to-date with the Core77 newsletter.
Test it out; it only takes a single click to unsubscribe