Josephine Cochrane's Dishwasher

Origin
Josephine Cochrane invented the first commercially successful dishwasher. Married to a wealthy merchant, she would constantly throw parties using expensive antique china. One night, some of it was chipped by the servants, which made her switch to cheaper alternatives. She also wanted to create a machine to relieve tired housewives of a chore, and had to when her husband died and passed along his debts to Josephine.

Effects
When soap is inserted into the dishwasher, it creates bubbles that molecularly modify objects into china. The user must be careful not to pop the bubbles, or else their bodies will be harden into china as well. If the transformed china is damaged in any noticeable way that is not merely cleanable, the effect will suddenly spread to large areas.