Velcro
Swiss electrical engineer George de Mestral invented his first touch fastener when, in 1941, he went for a walk in the woods and wondered why Burdock seeds clung to his coat and dog. He discovered it could be turned into something useful. He patented it in 1955 and subsequently refined and developed its practical manufacture until its commercial introduction in the late 1950s.
Frank Winfield Woolworth
Frank Winfield Woolworth (April 13, 1852 – April 8, 1919) was an American entrepreneur and the founder of F. W. Woolworth Company and the operator of variety stores known as "Five-and-Dimes" (5- and 10-cent stores) or dimestores, which featured a low-priced selection of merchandise. He pioneered the now-common practices of buying merchandise directly from manufacturers and fixing the selling prices on items, rather than haggling. He was also the first to use self-service display cases, so customers could examine what they wanted to buy without the help of a sales clerk.