... a complete-in-box copy of Nintendo's Balloon Kid.
Educational aside: This GameBoy-based sequel-of-sorts to the Famicom/NES classic, Balloon Fight, was released throughout North America in 1990 and throughout Europe in 1991. For some unknown reason, it never received a proper, packaged release in Japan, although a colorized version of the game--called Balloon Fight GB--was released via the company's Nintendo Power service in 2000.
For more information on Balloon Kid--which was produced, in part, by Gunpei Yokoi and Yoshio Sakamoto (Hirokazu "Hip" Tanaka composed the game's perky soundtrack)--read these blog posts.
See also: Previous '12 Games of Christmas' posts