How to handle unwanted gifts (read details)?

My son’s SO is a lovely young woman. She travels a great deal and brings me many gifts when I see her. Many of them are not my taste or things I would use such as costume jewelry. I am also trying to reduce the amount of stuff I have so that I can downsize at some point. I have been accepting gratefully and then just putting the things I can’t use away but I wonder if there are other ways to handle this. She is from a different culture too so I am not sure what would be gracious. Should I talk to my son about it or just accept the gifts? She is not going to be at my house often but I would like to curtail this custom if I can do it politely.