A couple of months ago someone posted a question about methods of displaying tickets and other memorabilia from Ballpark visits. There were a lot of great responses (Maps with push pins, Souvenir cups on shelves, Programs and tickets in binders, etc.)
Unfortunately, I can't seem to locate that post or I would respond there.
I held off responding when I first saw that post until we completed this year's trip but am inn the process of posting photos of what we have been doing - creating framed collages for each Ballpark/Game with the tickets and some chosen pictures.
Admittedly they are as much to capture my son's as they have aged through our "Quest" for all 30+ Ballparks as they are of the parks themselves, but I thought someone might enjoy them and might also decide on a similar approach - especially someone who is doing the trips with their kids/family.
Only down side - I"M RUNNING OUT OF WALL SPACE.
The quality is admittedly not the greatest (it's hard to take a quality picture of a picture) but take a look if you get a chance and let me know what you think.