Things that are good keepsakes from the time you spent all your money on front row seats for you and your partner down the third base line at AT&T Park: foul balls.
Things that are extremely bad keepsakes and harbingers of ejection, rejection, embarrassment, doom, destruction, abandonment by family and friends, personal hate mail from the office of Bruce Bochy, lifetime bans from Momo's, a plague upon your mortal/immortal soul, etc.: fair balls.
* * *
Nice Catch: Oakland fan shows how to snag a foul ball