Pears will continue to ripen after they are picked. Put them on newspapers on a table somewhere, not touching, and check occasionally to see how they are doing. If you like to can, you can preserve them in a sugar syrup with a little cinnamon and cloves added and a drop or two of red food coloring if you want to get fancy, and they are lovely all winter long like that.
You can slice them up when they're ripe as well and use them in a coffee cake or, with a little brown sugar and walnuts or pecans and some nutmeg, cinnamon or cloves, you can layer them and use them as a filling in some pastry. They can be chopped and placed for several weeks in a large glass jar, again with some cinnamon or whole cloves perhaps with the contents of a bottle of cheap vodka, then strained off, some sugar syrup added, a little more aging and voila, a wonderful pear liqueur.