Hi @Realfastfoodie I'm not particularly crafty or artistic, but over the past few years have been sorting stuff of deceased parents/grandparents.
For example, I found a tourist brochure from Paris in the early 1970s that my dad had written "Porter's Desk: xxx" with a phone number on the cover. He had distinctive printing. My sister has her home office decorated in a French theme, so I found a pretty frame for the brochure and wrapped that up as one of her Christmas gifts. She loved it!
I also had an old sort of Victorian sofa with brocade upholstery that was my gran's. It had seen a lot of family parties and Christmas Eves since the 1950s (well before I was born.) Last year I had it re-upholstered but asked the shop to save some of the cleaner fabric from the back. I cut little 4x6 rectangles of it and framed them for my cousins; everyone readily recognized the source and really liked theirs as a bit of nostalgia for our childhood/young adult days.
Recipes always go over well, as do old photos. My sister found a thank-you note from a cousin to our gran, from decades ago, featuring a pretty bird scene on the front; she framed it for the cousin and he was thrilled.
Old advertisements, programs from plays, ticket stubs from concerts, etc. can be made into nice little mementos.
The young adult set don't much like clutter or 'antiques' but sometimes a small "vintage" or "retro" items such as a travel souvenir, old garden tool, little vase or pitcher, etc. find a home with my younger cousins. Function is key.