My kids are allowed to ask Santa for 1 gift, usually something smaller. That way DH & I get credit for the good stuff!
Just after thanksgiving we go to Macys and they write a letter to Santa with their one request and put it in the red mailbox. I take a photo of the letter and remind them they can't change their mind! (Lol)
Christmas morning they find piles of gifts under the tree from us, each kid gets their own wrapping paper. Our fireplace is in a different room, so when they finish opening our gifts, they go in the other room and find the gift from Santa in santa paper.
Then later in the morning they open their stockings and find all the little things - some are wrapped (in their paper) and some not.