I guess it doesnt count as true mementos - but we have made the garage into a baseball themed party room.
We use the garage alot - almost like a rec room - because the weather is nice here most of the year.
Over the last couple years I have embedded baseballs (from my kids games - or pro games where we were given a ball) into the walls.
Nailed used bats on the wall. (One from Jeter.)
Catchers equipment, rosin bags, some chewing tobacco - helmets - gloves (1b-Pitcher - Catcher).
2 real nice photos of Ebbets field and Wrigley.
Hats from all the teams the boys (and I) have played on.
It looks pretty cool in there. Its a big garage - and the theme is BASEBALL.
When the guys come over to play cards - or just hang out - they all like it.
A pyscho - mini-tribute to the game.
And still growing.
Next up - baseball field on the garage floor - done by a good artist - then epoxied.
It is in the game.