Wonderbat
Wonder Bat is the name that Homer gave his custom, homemade "magic bat" that he used while playing for the Springfield Nuclear Power Plant softball team.
Creation
According to Homer, "It all started last year during a terrible thunderstorm, when I locked myself out of the house. Sheltering myself with a large piece of sheet metal, I ran for cover under the tallest tree I could find!" A bolt of lightning struck the tree, and a branch fell down. "Something told me this was a very special, very magical, piece of wood that I could make a bat out of." So, he put his homemade football on hold and made himself a bat.
Softball team
When his co-workers proved hesitant to play softball, Homer motivated them by saying he had a secret weapon, which had them decide to sign up. During the team's first game, the Plant team fell behind 5-2, with three men on base and Homer up to bat. Homer then revealed his secret weapon, only to be mocked by his team mates. However, Homer managed to hit a home run, starting a winning streak. Eventually, his team mates each tried to find their own magic bats, with Carl trying a piano leg and Charlie using a prosthetic leg.
Mr. Burns however, eventually replaced the team with Major League ringers. Homer, believing he had nothing to worry about as long as he had Wonder Bat, had his bat broken in half by a pitch thrown by Roger Clemens, much to his disbelief.