Not used for work
Some parts are metal
In most cases, powered by electricity
Larger than a 32 oz mayo jar
Makes no significant sound
May be any color
Typically has no power chord
It can be powered by batteries
Found indoors
Can be "used" anywhere but not primarily "used" in the kitchen or bedroom
If you're using it for pleasure, you're twisted




Not a rubber duck
Not a Xmas tree angel
Not an Ipod
Not Pokerkitty's vibrator
Not a cell phone
Not a nose hair trimmer
Not a digital reader
Not a light saber
Not Eejit's buttplug