After downsizing, I swore I would stop buying "Chachkies".  I've collected shot glasses, magnets, key chains, carved wood, local art work, ornaments ...

Now I purchase a "Journal" or notebook with the Port name on it and use it to journal my memories of each port.  I record my photo files location so I can easily find them on my pc.  I paste my luggage tag and other cruise info on the pages. They sit on a bookshelf and are great fun to take out and reminisce.