This is the kind of stuff I love to chase after. These aren't Baseball cards or game-used apparel. Instead, all of the items from the Hake's auction that I highlight below are Dodgers-related memorabilia that were originally purchased by fans to commemorate the first day of the season.
I've personally never been to a Dodger Stadium Opening Day. If I ever did I would roam the concession stands for pins just like the ones shown above. Featured in the pic are seven different Dodger Stadium Opening Day buttons/pins. (Auction Link Here)
From the top row, left to right: a 1988 pin and ribbon, 1989 pin and ribbon (pin celebrates their 1988 World Series Championship), 1995 Opening Week pin and ribbon, a 2000 pin and ribbon.