Loneliness is difficult for anyone, old or young. Grandparents deserve all the love and joy we can bring to their lives. Much more. You can pray for them.
Say this prayer for your grandparents
Dear God, I pray for my grandparents that they are never lonely, even when they are alone. I pray that your presence is always with them. I pray you will bring sweet and pleasant memories from their past. I pray their days are full of joy and bliss, and the better pleasures of life surround them at all times; a family that loves and cherishes them. I pray they experience no trouble but, at all times, have the love and support of their family. I pray you bless them with beautiful, old, and new friends to keep their day fun and lively.