knocker, door knocker, knocker-upper, pea shooter to shoot dried peas

 

The custom door knocker, by Suzie Stanford, was added during the renovation.Credit...Timothy Kaye

A knocker-upper was someone whose sole purpose was to wake people up during a time when alarm clocks were expensive and not very reliable.

In this photo, M. Smith earned 6 pence a week using a pea shooter to shoot dried peas at the windows of sleeping workers in East London, 1930s