I still have some of my Dad's little trinkets that he treasured. His JFK watch I gave him years before his death, his old straight razor and shaving cup he used up until his last year when his hands became too unsteady, his old pennies he carried around for conversation pieces. I'll probably always have this stuff. No monetary value but oh, the memories.
AMN, try to hold on to some little things of your parents that have meaning but that don't take up so much room.
I also have some of my Mom's old costume jewelry. Most of it is a bit loud for my taste, but it means so much just to have it in the jewelry case.