) so i've grabbed a couple of full series sets at low prices. the practical part of me bought a nice ugg comforter last year which was greatly appreciated and odds and ends of small appliances. i do i.o.u. cards ('i will pay for your next...') that i know will help streeeeeeeeeeeeeeech the household budget-haircuts, oil changes...gift cards these days i will only do with businesses that i'm sure are staying open b/c too many people bought gift cards to help support small bushiness last year only to have them go under anyway so their gifts to others were worthless-costco (multiples in small amounts so a person w/o a memberships can shop there), local chain grocery stores, drug store. i've also been known to gift the much better priced large bottles of shampoo my oldest likes as well as food items like flavored olive oils. i love to do silly but practical stuff in stockings (crockpot liners went over really well cuz she never thinks to get them until she's mid cooking with the crockpot).
My mother is the same way with stocking stuffers! Gift cards, new versions of makeup you are running out of (speaking of which washable makeup removers are AMAZING), travel sizes of things one would use on a trip, purel, Lysol wipes. You name it it’s in your stocking lolDD21 is getting a new bed frame this year plus a few smaller gifts of clothing and small kitchen appliances for a future apartment (she goes to school locally so lives at home still).
Her boyfriend also 21 is getting a Keurig Coffee maker, and a starter tool box. I also got him a "100 Date Nights" scratch off poster, because DD hates the fact that he never plans their date nights, it always falls to her.
And as a gift to both of them, I am "paying" air/hotel for the boyfriend to come with us to visit extended family at Christmas (actually using FF miles and Hotel points to cover most of it). DD I would always cover (at least until she graduates college which is this Spring), but covering his is outside my obligations, making it a gift.
Stocking stuffers tend to be either practical or completely stupid LOL Practical stuff this year includes underwear, facial products, a refillable pod for the Keurig, travel tie case, etc. Stupid stuff includes some silly socks and post it notes that look just like our cat. Both will also get $50 Amazon GCs to pick up little items they are disappointed they didn't get
(For those of you wondering, DD insists her boyfriend is "the one", so I humor that although I still have my doubts just based on their ages. And there's nothing wrong with spreading some extra love at Christmas if you can! He's a good kid, even if they don't work out as a couple, but has some issues at home so he appreciates it all.)
One thing I will say that my mom insists on doing for my cousins and I even though we are all over 18: at least 3 books you want. Or an Amazon/ Barnes and noble gift card for getting books. Really helps when you are in college too. Cant tell you how many spring semester books I got for or from Xmas when I was in collegeI think I'm going to upgrade their phones and keep them on my plan and continue to pay for it and let them continue to live here rent free
I'll wrap up some small stuff for under the tree and stocking stuffers but I'm not making any kind of list or going crazy with stuff for them. They've reached the practical gift stage of their lives
And DD would be mad if I didn't throw some makeup remover wipes in there as well. I like to get stuff that is needed, but you get to the store and go "gosh, that's expensive for what it is - it sucks I have to spend my money on that!"
I also grabbed him a couple of pairs of black khaki-type pants that he can wear to his current job at a car parts store and if any future job environment is business casual - I noticed the pair he usually wears had quite a few holes in them the other day; DD says he likes to wear things until they just can't be worn anymore LOL It feels a little odd to be buying him these types of things, but I'd rather get him things he needs instead of more video games or whatever (I've gotten him some "fun" stuff already, so I'm not a total Grinch 
Mine are roughly the same age. Some things I've bought:
A fire extinguisher is my daughter's go-to shower or wedding gift. As she says, "There's nothing uncool about safety".
Something smart I did for my kids: About the time they finished high school, I started buying them a professional outfit for their birthdays (mine are all spring babies) and Christmas -- it was an "extra gift". I always had them choose something very simple and classic -- like gray slacks and good basic loafers. At first they didn't think much of them, but as they needed to go to interviews or make presentations in class, or whatever, they were ready /didn't have to scramble to find something quickly. When they finished college, they all had a small professional wardrobe.
