@Susan4180
Like @Mark116 , I have a few extras in the kitchen for guests. The listing says I provide tea, coffee, sugar, salt, pepper, cooking oil - so the basics really. However, I actually provide a wide variety of teas, different types of coffee, sweetener, honey, hot chocolate, breakfast cereals etc etc. There are also different types of oils, vinegars, spices etc.
I find that most guests don't use a lot of these things (although there is always the occasional guest who feels a need to use as much as they possibly can) so they go a long way, but also, guests seem impressed because they are being offered more than they expected, i.e. I am underpromising and overdelivering. None of this costs very much, especially as guests often bring tea as a gift.
I'd never really been into baking until quite recently, but have found that guests greatly appreciate my homemade cakes and deserts!
A card and/or small gift for a birthday, anniversary or other special occasion is usually really appreciated, but I stopped with the Christmas cards and gifts as few guests seemed to care about those.
I also find that even some things that are free can go a long way in making a guest appreciative. They love the welcome blackboards with their names on them. They like that I put a carafe of water and glasses in their room. I also have a selection of tourist leaflets, maps and discount vouchers for them and usually a small selection of magazines in their room, which will be in their own language if I have them. The leaflets I pick up for free and the magazines I used to pick up when travelling for work, but that has become very seldom since the pandemic started.