A docile horse wears a gas mask as a precaution against gas attacks, on March 27, 1940. It was developed by "Our Dumb Friends League," a humane society in London, England. Read more: http://www.businessinsider.com/50-awesome-inventions-2010-9?op=1#ixzz1VKWxXZtR
Chindogu: The Unuseless Inventions of Kenji Kawakami
Broom and Dustpan Slippers. I don't know about YOUR floors, but it would take me days to sweep MY floors with these Broom slippers. And the little Dustpan? You'd have to do a high-kick to empty into a garbage can.