Hasbro's Stock Certificate is appropriately adorned with the familiar icon from Monopoly, Uncle Pennybags. This certificate makes a perfect educational gift for children of all ages.   Owning one share of Hasbro Stock is a must for any game board fanatic. One of the top toy manufacturers in the U.S., Hasbro has always delivered value with its popular line of toys and games.   Childhood favorites such as G.I. Joe, Easy Bake Oven, Play-doh, Tonka Toys, and Mr. Potato Head are just the beginning.   Through its subsidiaries, Milton Bradley and Parker Brothers, Hasbro sells the well-known games Scrabble, Candy Land, Risk and Trivial Pursuit.