I was thinking along the same lines. My wedding present was a Kohl's gift card, even though they were registered at Amazon and Target. Kohl's was my mom's favorite store, and she loved sharing her "Kohl's Cash" with my niece, so I told the bride and groom they should consider whatever they bought with the card a gift from Grandma.
I was also touched that she requested photos be taken with her and me, and then with the three of us: me, her and her brother. I'm not especially close to my family, and feeling like an important part of my niece's day meant a lot to me.
I really like the groom's family. They hosted the wedding at their house and were so warm and welcoming. And thoughtful! If you didn't have a mask, one was provided for you. But you were wearing one. I appreciated their wisdom and maturity during the pandemic.