stopping by the British Library for a look at Weird and Wonderful Gadgets and Inventions. Examples on display include:

The two handled self-pouring teapot (1886)

Clockwork burglar alarm (1852)

Grenade to put out fires (1890)

Mechanical page-turner (1890)

The Dynamo Shaver (1930)

The original Sat-Nav wristwatch (1920)

The beer can hole maker (1940)

The automatic hair nose cutter
(1920)

The whisky bottle lock (1882)

Information on
the British Library website.