I do a number of things, but one I have not seen on here yet, so as not to repeat, is I place a "breakfast in bed" tray on the bed with a printed household and local information sheet, my card- so that they can take my contact information with them to have on them for quick reference for Uber, directions, need to call me, etc. On the back of my card, it says "Your review and referrals are gratefully welcomed."
I also place a tiny little bud vase with one flower, and a small, good quality chocolate for each guest.
I have a carafe filled with our good local El Dorado Canyon water (that we buy in 5-gallon refillable jugs) and a pretty glass for each guest at the bedside in a pretty tray. Also on the tray is a metal "leaf" with the house key. They can then use the leaf to catch their earrings, change or other doo-dads. I provide a box of tissues at the bedside.
There is a bedside table on both sides of the bed. In the drawer, I have a bottle of foam earplugs and blackout eye masks that I purchase on Amazon. They are very economical, and a much-appreciated touch for sensitive to noise and light guests. I also stash hotel-sized soaps, lotion, shampoo and conditioner, etc in there, even though I buy big, excellent quality, eco-friendly bath and body products for them to use in the bathroom. They're still popular little "gifts."
Good lighting on either side of the bed is crucial. One is on a swivel arm for reading in bed.
I furnished the room with a few special art pieces, a beautiful comforter, a few low-water needs plants, and pretty decorative pillows that are sturdy and big enough to use as "prop up" pillows in bed. The breakfast in bed tray serves as a perfect vehicle for laptops, iPads, and doing a little work in bed since I don't have room in there for a full desk. I have a few lovely and carefully chosen pieces of art on the walls. (Vintage hand painted botanical wildflower prints.)
I provide a luggage rack so guests can unpack their things and have a place to have their luggage handy. Nice hangers are in the closet along with extra towels, blankets, and pillows.
I provide current magazines (I used some unusable airline mileage points for magazine subscriptions) and lots of brochures of local attractions. I recently added an adult coloring book (no, not THAT kind of adult book! haha) and colored pencils, since I have taken up coloring. (It's so zen for me! My mind just empties as I concentrate on my masterpiece.)