Bored baking with DCs is great, if you have patience.
When DD was 1 (Boxing Day baby), she mixed the eggs, squished and rolled a bit of dough and cut out some shapes which DH and I kept aside to test (and which went nowhere near the rest of the batch of cookies for crèche!).
The next 3 years, as she grew, we had to make the same recipe, but she got better at mixing, measuring things on spoons and then scales, sieving the flour and baking powder together, stirring the dry ingredients and eventually getting strong enough to stir the wet ingredients. And a lot better at rolling and cutting! So I moved away from everything pre-measured into bowls before I got her apron on to help - and got her more involved in cleaning up afterwards (and then I'd mop up the kitchen floor flood!
)
Santa's cookies are a different recipe, that is to a make a log of dough and slice off circles to lay flat on the tray. I found out accidentally that it freezes well, so some years we have made them from ingredients on 24th, but a few have involved getting the spare batch in the freezer out.
So just be careful exactly what traditions you start that may be hard to get away from.
(And when it comes to cakes and buns and things using a mixer rather than hand-beating in a bowl, again start with pre-weighed ingredients and low expectations, but building up using a butter paper to grease the tin and then making flour clouds as you flour the tin, putting bun papers into trays, and the other progression steps for the cookies above.)
There are great DC-sized baking kits available nowadays, so you could get baking tools that DC can use in future years, and a DC sized apron, as ways to get them involved too. Things like wooden spoons, whisk, measuring spoons, small rolling pin etc. We used my existing cookie cutters for adult-sized cookies, but also small play-dough type cutters (well washed before use!) to make DC sized cookies. It may be more fiddly, but DC happily feel they are more involved, those tend to be easier for them to use, and if you will be feeding a few DCs (at home or a crèche event), they are great sized for eating instead of loads of half cookies left squashed into carpets or hair etc ....