I photograph or scan certain items. I scrapbook them in order to tell the story. The journaling makes the object come alive!

I save the most meaningful cards (to me) and scrapbook those by making a pocket on the page and slide the cards in the pocket. I can easily remove them by sliding my hand inside the page protector. I go through and read them every so often. My DD is enthralled with my old scrapbooks. Some cards I have cut apart and adhered the front somewhere and the message elsewhere in my scrapbooks or when I needed to fill the space I put both cut parts on the same page.
I am currently working on a series of scrapbooks covering the thirteen years between leaving home at age 17 and meeting DH at age 30. This timeframe is FILLED with sentimental items! I gathered it from all over the house and merged several notebooks and various sources all into one album titled "My Life Journey" (three physical books in the series). This is releasing a lot of "stuff" emotionally and physically.
For DD's special items, I photograph her holding/wearing the item and have her write a little story to go with the item. When she was too young to write the story, I wrote it for her while she dictated it to me. (I scan her handwritten stories. I typed the other ones directly into the comments of the photo.) She is not nearly as sentimental as other girls her age that we know. She regularly goes through her belongings and recycles or gives items away.
DH has a box of trophies and medals from his track star days. He has another box of mementos, too, and a scrapbook his mom made him before college. At this point, I think he has more sentimental items than DD & I combined.

They are easily stored in his side of the closet and are very reasonably sized.
Oh, speaking of closets, I have DD's baby clothes that *I* loved (for various reasons) in my side of the closet and am slowly working on a quilt to showcase them.
DH & I photographed our old t-shirts from various events and activities. We then wore them until they became rags. We still have the rags in many cases and the picture of the t-shirt in good condition.
