In bathroom amenities: glycerine facial soap bar & Bath & Body Works hand pump soap at sink; individual lotion, shampoo, conditioner, bath salts or bath fizzies or bubble bath, and bath soap; travel toothpaste, travel mouthwash, dental floss, emery board, cosmetic pads, q-tips, disposable razor, shower cap, make-up mirror, hair dryer, shoe shine cloth, lint roller, facial tissues, a container with sanitary liners, pads, tampons, and paper bags for soiled sanitary items.
In the bedroom: sewing kit, first aid kit, another box of facial tissues, emergency flashlight, deck of playing cards, maybe a crossword book, current magazines, glass drinking glasses, iron/board, spray water bottle with iron, notepad, pen, extra pillows, blanket, monogrammed waffle bathrobes (they're new & I love them), turndown chocolates, fresh flowers.
In a central area (some rooms have coffee makers & beverages might be in an in-room fridge): Cokes, bottled water, single-cup coffee maker, 24 hour tea/coffee service, a basket with stuff people might need or forgot (eyeglass repair kit, tweezers, toothbrushes, static spray, shave gel, his & hers deodorant, and other stuff that I pick up that looks interesting.
Of course we have TVs, clock radios/CD players/iPod docks, DVD/VHS players in each room. I've probably forgotten some things - I try to have everything so that the guests don't feel like they need to bug us for stuff.
About the bathroom soaps, shampoos, etc. - I've been trying out different brands. I'm really picky about how easy it is for the shampoo to come out of the bottle. Also, I've found that cello wrapped soaps work out well, as you usually don't have to toss them if the get wet but are not used.