My lamp has three lights.
I have three half-siblings.
I have three ex-step siblings.
I have three PlayStation consoles hooked up. PS2, PS3, and PS4, my PS1 is in the closet.
The pulmonary valve, aortic valve, and triscuspid valve in the heart have three cusps each.
I have three ears, one which isn't really mine.
EDIT: Also three busted Sony wireless headphones (two with busted connectors and one with a busted headset).
Bathrooms, 3-car garage, 3 credit cards.
I have 3 fingers and 3 toes. I also have 10 fingers and 10 toes.
That's about all I can think of right now.