The bubble-thin glass balls that shattered when you looked at them wrong.......the spray-on snow (on the real tree was OK, but when you sprayed it on the windows, it was a bitch to get off later).....the "angel hair" that got everywhere....the tinsel that clogged up your vacuum sweeper....the little cardboard Christmas villages. Yep, I remember and miss them all.
Did your mother carefully fold and save the used wrapping paper so it could be re-used "next year"? We even had to take the tinsel off the tree and lay it flat in a box. Bows were carefully put in a box and ribbon was wound around cardboard for future use. Any leftover Christmas seals or gift cards were saved, too. Very little was wasted back then.
If I save anything to use "next year", I can never find it. Stuff I bought after Christmas, stuff left over, stuff in general. Somewhere, somewhere out there in the Twilight Zone is the "Land of Lost Christmas Items".....hey, Disney could make a holiday movie starring Wendy the Lost Wrap, Tommy the lost Tape, Caroline the lost Card.