Hi Rose,
I remember the 'Acorn' look ornaments well! My mum had Glass bird ornaments (among many others!) that were clipped to the tree branches, and as each of us children,I'm one of 8, left home to get married she gave us one to start our own Yule Tree ornaments. I got mine over thirty years ago and when my daughter got married 10 years ago I passed it on to her. When she gets it out next month to decorate her Yule tree I'll take a pic to post here.
Warmest Wishes,
John