5.Liquid Paper

Where It Was Sold: Walmart and Office Supply Stores
Organization: Newell Brands
Initial Cost: $1–$3*
In the 1950s, a secretary by the name of Bette Nesmith had the idea for liquid paper. Because liquid paper could “whiten out” whatever imperfection an employee produced, it became the go-to workplace mistake-corrector by the 1960s.

Wikimedia/FA2010/Liquid Paper
This white, ink-like material was used to correct typos on typewriters and ink pens. Despite the fact that many people mistake Liquid Paper for “White-Out,” the latter name did not exist until 1974.