At my house, there are specific items each person claims as his/her own.
It's our favorite "stuff".
Example: I must drink my coffee out of my favorite cup. No other cup is acceptable or it's just not "right".
The hubs will only eat with a certain fork and his favorite spoon...no one else touches those two items!
My son requires his favorite pillow...and only that pillow will do.
Tell me we are not the only weird family out there! What is a required "favorite stuff" for you?