This year, I have made nice fabric storage cubes for a few pre-teen and teen aged DCs (my own and DNieces/DNephews) which went down well - I had fabrics that would go nicely with their plans to redecorate and which were suitably grown up rather than childish.
I made some felt play food for a younger DN (and bought an M&S basket in their fun food promotion in the summer, to put them into). Things like bacon, egg, sausage, bow pasta, pears, broccoli....(and I might get time to do some tomato, cheese or other bits yet).
I have previously made crayon rolls and given those to DNs, filled with crayons and often with a colouring book as well. The same general concept works well to make a makeup brush roll for an older girl/woman, which is especially useful for any who do a fair bit of travel (in normal times).
I'm also hoping to do some zippered pouches - like pencil cases, washbags and tiny ones for coins or earbuds - for various people.
For another DN, I knitted a scarf in the colours of their (much loved) sports club. And a DAunt is getting a more refined scarf in more muted colours to match her kind of style.
DMIL is getting a knitted lap blanket (which took surprisingly little wool for the size of it, but it was a project I have been picking up and putting down for about 6 years as the rows were so long).
Another DAunt is getting a set of 6 placemats, using leftover blackout lining from a curtain project a few years ago as the backing, and a yard of cotton for the front. I have another couple of yards of different nice cotton that I could do other ones for other families, if I have enough time. And fabric napkins are another option which need less cotton and no backing.
I am cross-stitching bookmarks for a few people - and putting some stiff interlining and some cotton on the back to hide the knots etc and make them usable as bookmarks. You could easily do similar with small patterns as tree decorations and just cover the back with nice fabric.
I have knitted facecloths using cotton knitting wool, and gifted with a bar of nice soap, suitable for the recipient - which went down well. There are lots of patterns online, with individual letters, patterns such as butterflies, coffee cup, dog, skull and crossbones, sailboat, or just different types of fancy knitting stitches (most of which are just different numbers of plain and purl stitches so like ribbing but creating bobbles or waves instead). I generally knitted a short length of I-chord using the last 3 stitches as I was casting off (so cast off all but the last 3 sts, knit about 2-3" of I-chord and cast off the last 3 sts), to sew back on itself to make a hanging loop - which is not normally on the patterns but was on 1 and made sense to do generally.
Homemade food and beverages can be lovely. Limoncello is lush and there is just time to make the proper version (it needs about 8 weeks maturing time - but I have seen a 4 hour freezer version). Dishwasher vodka using skittles or toffees or similar also works well. It is sloe season, for sloe gin.
If you can find gluts of seasonal fruit or veg, you also have time to make jam or chutney yet (but chutney also needs a few weeks to mature so do that soon or let your recipient know not to eat it for a couple of weeks).