Usually, what you would call a thing to but other things in is a container. It contains the items you wish to put in to, so they will not escape and run wild through your home like savages in the...
When someone calls you their 'thing, thing', it means that they're inarticulate; a very limited vocabulary (or they don't want to say the words they're really thinking).
Seriously if your asking a question...make more sense and no the thing you know with the right is known as BE SERIOUS or stop being a idiot!
; P
glad i helped!
If you want a nickname for her, make it a original one that is both personal and affectionate. If you can't think of one stick to calling her by her name.