Stationery
Wasei-eigo in the Stationery category — 3 words that look English but mean something completely different in Japanese.
ボールペン
bōrupen
A ballpoint pen ≠ ball(point) pen
ホッチキス
hotchikisu
A stapler (the desktop tool that binds paper with metal staples) ≠ Hotchkiss (brand name)
シャープペンシル
shāpu penshiru
A mechanical pencil (with a propelling lead refill) ≠ sharp pencil (from "Ever-Ready Sharp Pencil")