One man’s trash is another man’s treasure. Visit my dorm room and you’ll agree. For as long as I can remember, I’ve collected all things sports: action figures posters, mini-helmets, pennants, bumper stickers and cards.

I’m now 20 and still ask for “toys” for Christmas.

I learned at a very young age that the coolest collectibles are often the cheapest, whether they are newspaper clippings, ticket stubs, programs, souvenir cups or pocket schedules.

To this day, I often pick out cereal at the grocery store based on the prize — or lack thereof — inside.

Raisin Bran’s got mini-bobblehead dolls? Boo-yah.

And then there is the pinnacle of any sports collector’s quest: the free stadium giveaway.

Nothing enhances a trip to the ballpark like a promotional sports bag, replica jersey, bobblehead or Babooshka doll.

Here are some upcoming promotions you don’t want to miss.

Sunday, June 1: Resigned to their ineptitude, the Tigers take the age-old “Kids run the bases” promotion to new heights with the advent of “Kids do everything” day. The first 25 kids 14-and-under suit up and live out their major league dreams — running the bases, hitting, pitching and fielding against the visiting Yankees — while manager Alan Trammell and the Detroit regulars enjoy a much needed day off by serving as bat boys, grounds crew members and ushers.

Friday, June 6: Come join the Mets for Mo Vaughn talking bobble-belly night at Shea. The first 20,000 overweight fans receive this gem to remind them that things could be worse — you could be fat, slow as molasses and batting .190 for a team 11 games out of first place.

Friday, June 13: Don’t walk under a ladder on your way to the Great American Ballpark for Ken Griffey Jr. rehabilitation night. All fans in attendance will receive a Cincinnati Reds hospital smock compliments of the Cincinnati Hospital.

Saturday, June 21: The first 20,000 fans 18-and-over receive a complimentary Carl Everett titanium alloy cell phone case. Guaranteed to prevent potential damage to your phone upon contact with the back of some unsuspecting outfielder’s head.

Thursday, July 10: All fans 4-feet and under receive a David Eckstein growth chart at Edison International Field.

Friday, July 11: Tired of sitting in the Olympic Stadium bleachers all alone? Then be one of the first 10,000 fans — you better arrive early — at tonight’s game and receive a free Expos inflatable person. In addition to enhancing your ballpark experience, they also serve as great dummy passengers for those wishing to utilize the HOV-lanes for the morning commute.

Tuesday, July 29: The Toronto Blue Jays ask you to join them on “I survived SARS” t-shirt day at SkyDome.

Friday, August 1: Legends Day at Tropicana Field. The Devil Rays celebrate the sixth year of their storied franchise with teal throwback uniforms honoring the days when it was acceptable and expected for them to be the worst team in the league.

Tampa Bay greats of the past such as Wade Boggs, Jose Canseco and Mike DiFelice will be in attendance and a highlight video featuring all seven of the greatest plays in Devil Ray history—including the 1998 debut of Raymond, the team mascot—will be shown during the seventh inning stretch, for all of those dumb enough to stick around that long.

Tuesday, August 5: To celebrate the start of the Packers preseason — and the ever-nearing end of the Brewers season — all fans in attendance at Miller Park will receive a Green Bay Packers countdown to kickoff calendar. It can’t come soon enough.

Thursday, September 25: It’s Bill Buckner glove day at Fenway Park. Don’t miss this promotion in conjunction with CPR awareness week. All fans in attendance will receive a team poster and the opportunity to become CPR-certified by practicing on Nomar and Co. following yet another late season choke-job.

Sunday, May 25: Barry Zito bobblehead day at Network Associates Coliseum.

The last one’s real. I got my tickets. Got yours?