A few years back for my dad's birthday, my wife and I gave him a BYU Swag basket. It included a jigsaw puzzle of the stadium, a t-shirt, an autographed football, and a some hats. Since dad was couped up in the house and wasn't very mobile, he didn't really use the hats much, and my mom gave them back to us after he passed earlier this year.
There were 4 hats, and I have three sons. Each of us has a hat for football season, that we can share memories of dad/grandpa with. That really kind of makes me happy.