I add pictures of Christmas presents. I do one of all the gifts wrapped (all as in every gift I give out not just gifts for my children). Last year I did it to make a joke that my Mum's cat at got the biggest gift. I had wrapped up an empty nappy box for him as he loves a nappy box to play in.
I also do a 'Santa's been' photo of the Christmas stocking hanging up on the bedroom door. You can't actually see the presents, just a wrapped gift poking out the top. I like it because in our old house I could take it at an angle that showed the filled stocking in the front of the picture with my son sleeping in the background which I liked.
They only time I make a point of taking photos of unwrapped presents is when they are something weird. My husband is in to Godzilla and I am an X Files fan so we tend to give each other unusual gifts that can be used to set up funny pictures.
With my son's toys, if they have been given to him by a family member who doesn't live nearby I take pictures of him opening them and playing with them so they can see he is enjoying their gifts. I also send thank you notes but they like to see the pictures.
I love Christmas and do a huge amount of pictures of Christmas and the run up to it. The focus isn't on the 'stuff' though it is on the people. We have pictures of my son sitting on my husband's shoulders at the Christmas light switch on, decorating the tree, my brother wrapped in tinsel with the cat sitting on his shoulder that sort of thing.
I don't do it to show off what we have or things we have brought, I want to show the family who don't live nearby and who we don't get to see as often as we like what we are getting up to.
I love it when other people post Christmas pictures, all that I have seen seem to be in the same tone as mine. Showing what they have been up to and what fun stuff they have been doing. I have never seen any I have thought have been posted just to show off purchases but then I suppose it is how you view them.