For little ones happiness is a box of Lego, for grown-ups happiness may be a glimpse back into those happy childhood times, or a good drink, a good book, a nice surprise present or a stupidly cheesy romantic movie. Or a lot of presents under the Christmas tree. I think it's just great if you could be that Santa who put those presents there for everybody else to enjoy.
It's not what's under the tree that matters. It's who's around it!
Make someone happy this Christmas!
Merry Christmas to you and all your loved ones!