Some ideas that might be nice for a guest room for lovingly welcoming family, friends, or taking in someone needing shelter. Decor, items to have available for them. Frugal furniture ideas, gifts, elder care.
And, how festive it would be for your guests to find a Santa cap for them and a big stocking for them on the guest bed, filled with snacks, bottled water, puzzle books and a nice magazine, a map of your area, new pair of socks or slippers for around the house (I’d do toe sock for when our adult kids come home!), little lotion/toiletries, etc.