DD5 has already started talking abt what she wants for her Santa present (Santa only brings one big unwrapped present to our house... although Grandma insists that he brings presents to her house, too), and she swears that what she wants is some kind of Disney princess remote-controlled dog (?!) which I can't imagine her actually liking or playing with much. She has started getting into Lego Friends, so I think I might get her one of the bigger sets as her Santa gift. I am an experience person, too, so I'd love to get her tickets to Disney on Ice or something like that, so we'll see what's going to be in town after Christmas. Her little things will include My First Reader-type books, a couple of Beanie Boos, and some board/card games. Of course, she'll get Christmas Eve jammies (and now I can coordinate hers with the baby's -- happy scrapper sigh!).
The baby will be 7 months old and completely oblivious, so I'll just pick a couple of things that tickle my fancy and be done with it.
SS12 will be the trickiest to buy for, I'm sure. Besides video games and apps, there are really no other 'things' to buy him, so he will probably get some tickets to some kind of sporting event, some GCs, and some clothes/pajamas. DH is in charge of his presents.
The hardest part for me is getting their yearly ornaments: figuring out what to get and then actually finding them. The baby's will be easy since this is his first Christmas (although I'm sure both of his grandmothers will get him a first Christmas ornament, too), but deciding what kind of ornament best represents the year for the other kids and then locating it always takes more time than anything else.