Pet Rocks
Gary Dahl made millions of dollars on his pet rock idea in the 1970s. He sold them for $3.95 each and reportedly became a millionaire within six months of launching the product.
Dahl's Foods was created in 1931.
In 1975, Gary Dahl introduced America to the Pet Rock. While the fad only lasted about six months, it was successful enough to make Dahl a millionaire.
William Dahl House was created in 1858.
The Roald Dahl Omnibus was created in 1986.
Roald Dahl Plass was created in 2000.
The Roald Dahl Treasury was created in 1997.
Dahl's Aquatic Frog was created in 1896.
De Novo Dahl was created in 2001.
Roald Dahl Children's Gallery was created in 1996.
The Collected Short Stories of Dahl was created in 1991.
Roald Dahl's Guide to Railway Safety was created in 1991.