Entrepreneurs from Malibu, California, have modernized an age-old craft by offering knife sharpening by mail. A mother-daughter duo from Jacksonville, Florida, introduces a simple yet ingenious device that offers relief for all who suffer from bug bi... (more)tes. While an entrepreneur from Western Springs, Illinois, pitches a bathroom product to help block odors before they start. Finally, a Muslim American from Rockville, Maryland, invented a vegan alternative to pork rinds.