Among the tables in this video is a really small one to which you can add five extensions. Another table expands in size when you turn the center of it.

https://www.youtube.com/watch?v=3KQyswhIV7U

If you need to expand the size of your table several times each year, keep looking for one that both expands as much as you need and that suits your taste. If you entertain even if it is just family several times each year, plan ahead how the table you choose will work -- or how a second table might fit in the room.

Another thought: A "heavy" table in a relatively small room has some potential to visually shrink the room. What other pieces (buffet or china cabinet) can make a difference on whether or not any table "works" well, too.

If the ends of a pair of tables you choose are the same height and squared, putting two tables together could work.