Artificial tree, paper plates, paper cups, grocery delivery - all good!!
Instead of going hog wild with indoor or outdoor decorations, simplify by hanging a lit wreath on your door and that's it (you can even place a spot outside it you want - simple & inexpensive). String lights around the perimeter of your family room for a festive look, cut greens from your yard and gently lay them on mantles, etc., for the added touch. Hang your holiday cards on the back of your door or around a fireplace, etc. All those are decorations that don't break the bank and are simple and easy to clean up or put away come January 2nd.
Before you order your groceries, create an easy to follow weekly menu that EVERYONE can help prepare and then make your grocery list *using items you already have on hand first*. That is a biggie!
While on the subject of food - take one day a week and pre-prepare most of your meals for the week. Or, make double the amount and freeze half for another night when pressed for time. Buy those canned crescent rolls or pillsbury french breads - those are easy to bake and complete a meal nicely. I always have bagged frozen veggies and boxed vegetable/chicken stock on hand to throw soups and stews together - easy fast meals. Also, I keep those rolled pie crusts on hand to throw an easy tasty nutritious quiche or pot pie together. Roast a whole chicken and then after dinner, pick the carcus clean, freeze that leftover meat for pot pie, sauces, lunches, whatever.
I know people who do laundry everyday and it causes them so much stress. I only do laundry on weekends, preferably all in one day, either Sat/Sun. Everyone folds and puts away their own stuff. In fact, I only do H and my stuff and the household towels; easy child and difficult child *when she's around* do their own laundry - again, only on weekends.
Having a tablecloth on my kitchen table helps me a lot. ??What?? Yeah, no constantly wiping it down. Put a cloth on it and every other day I put a new one on and toss the old on into the laundry. Clean table that looks pretty all the time, what could be easier?
Clean out your cabinets in the kitchen and bathroom, as well as the bedrooms and halls. Get rid of the clutter or box up stuff you don't use all the time. Reorganize and stock your bathroom closet or vanity with essentials; same for kitchen, etc. It's easier to find things without other junk getting in your way and then you always know what you have and what you need at a glance.
Simplifying takes a little time and planning up front, but once you get that out of the way...life is simpler. Check out the flylady.com. She's got great tips. I personally found her daily schedule to be too much for me, but some people incorporate a lot of her ideas into their weekly regimen and it works for them.