Left in the box, I know why!!!
A great many women of generations past beleived in using up and wearing out what you had before using something new.
Soo, when the kids grow up, leave home, and start making money, they decide it's high time dear old Mom has a new stove, she has had that old one forever, and works herself to death, we can afford it. So they buy it, and either bring it over or have it sent out. Mom is thrilled, and amazed they do something so sweet, but worried they spent so much money on her. But still thrilled she has such good kids. Since the old stove is still working, Mom, being the saving type, has the new one put in the basement, "for when my old one wears out." (Mom is also thinking that this way, if the kid's stove wears out, they can come get this one, instead of spending so much money again.)
My great grandmother had this mentality, and would put away brand new items she received as gifts, continuing to use the old ones, as they werent yet completely worn out. Once her daughter in law was bemoaning how much sheets cost, and how she was going to have to get some new ones. Great grandma went to the linen closet, grabbed 2 sets still in the package, and told her to take them. They were the same ones said daughter in law got her for Christmas 2 years earlier. When daughter in law mentioned this, Great grandma said, "well my old ones arent worn out yet, and yours are. Now doesnt it make more sense for you to take these home and use them, instead of you spending alot of money on new ones while these sit around waiting for mine to wear out?"
Grandmother is the same way. Every Christmas she opens her gifts, very carefully so as not to damage the box up, tears off the tag and puts it inside the box, so she will know who gave the item to her, and is always very grateful that we would get her whatever it is, and tells us all we spend too much on her, and 90% of the time, you never see the gift again. She simply closes up the box, and puts it away until it is needed, whether by her, or one of the "kids", (these kids are in their 40s, lol). Of course grandkids too, (and we are alll in our 20s).