OOh, some lovely ideas!!
I have done lots in the past but I haven't had time for crafting recently (as in, maybe 3 years, sobs...).
I made 10 stockings when the DSiblings agreed to do a KK and small stocking items for everyone else (6 "Kids" and 5 DPs at this stage - I need to make another).
A good few years ago, I made a large bundle (probably about 30 as I gave loads away and have a good handful on my own tree) of small felt stockings. They have various decorations on them, are either red or green, and have a nice ribbon to hang them, and can hold a small candy cane.
I taught myself enough about crochet (which is really not a lot) to make a couple of snowflakes for the tree. Very wonky ones, but different and realistic! And I knitted a tiny angel (flat one, like a silhouette, not anything fancy) as well which goes on every year too.
I do like to do some flower arranging for the house for Christmas, if I get time. Last year, I did manage to do a flowerpot arrangement each for DSisIL and DMIL's houses, with a candle in the middle, for the Christmas tables. That will take some arranging again this year, as they kept the pots and oasis trays and candle holders - and I don't have any spares. So while I want one for the cottage we're in, and hopefully to do them for DMIL, DSisIL and DM - I need to gather a fair amount of raw materials in advance, quite apart from the greenery and flowers and berries on 23rd/24th. Actually, that's another item for my list of phonecalls too - order the flowers locally there so I'll definitely have those, I can gather greenery in DMs garden if necessary.
I actually have loads of materials to do Christmas cards, and make Christmas flannel cosy PJs for DD (if she'd still fit the amount of material I have!), and Christmas tablemats, and lots of other projects that aren't even UFOs (unfinished objects) yet!
Most of my crafting though has tended to be presents. Like the year everyone got cotton facecloths, each with a different picture knitted into the middle. Or every DAunt and DUncle got a different type of scarf (I was studying that year and needed distractions from the braininess stuff!).
There are a few UFOs already started though - including the blanket (which is just nice and bobbly, not actually festive) that I started for DH's DAunt about 4 years ago is still only halfway there. Maybe that's what I need to concentrate on first.