There are a number of design patents based upon the shape of a state.

D773,692 Arizona Paving Stone

D652,608 Glove Ornamented with a Map of the State of Alaska

D462261 Compressed Fabric Article Package Having a Simulated California Map Shape
D362645 California Medallion

D686,456 Hawaii Shaped Plate

D603,728 Scoreboard in the form of the State of New York

D704088 Tennessee Ring

D654,318 Texas Shot Glass
D623,001 Barbeque grill shaped like Texas
D610,474 Scoreboard in the form of the State of Texas
D588,027 Scoreboard in the form of the State of Texas
D543,073 Pair of Texas waffle iron molds

D497,334 Texas Grille Insert
D497,333 Texas Grille Insert
D492,625 Texas Grille Insert
D492,624 Texas Grille Insert
D488,674 Texas Mug
D418,447 T shirt compressed in the shape of the state of Texas
D282,136 Texas meat press