I had a very nice family invite me to Thanksgiving dinner. They don't know me and I didn't know them but even though I really would have liked to stay home I went. And honestly it felt nice to not be alone for a little while. They have my deepest gratitude for having me come over.
Believe me that a lot of people will turn down the invite if you extend it to them. Keep offering though, or stop by with a plate of food. Some people will want to stay at home and not be a bother. Offer to come over a few days before and cook, especially if that is not something they do well or feel up to doing. Take them to the store and pick up a few things you will need and use their kitchen. You can have a meal with them and leave knowing their refrigerator has some things in it for the holidays.
While holidays were not big with my wife and I many times I would still cook something nice for us to have. We may celebrate on a different day or a different time than the average family but I still miss having her here to do those things.
The thought of someone coming over and pulling a frozen ham or turkey out of the freezer and making use of the kitchen makes me long for it. I will eventually get to the point where I want to cook but for now heat and eat meals are pretty much my life as is being alone.