Japan: The Land of a Million Point Cards

Japan has points cards for everything. I'm given several every week, and most the time I don't know what the points apply to. But I have held onto a fair share of them. I have the world reknown Subway card, which once filled will get you 200 yen off your next sub, not a free sub. I have a Drink Card from Freshness Burger, and have actually recieved a free drink with the filled card. Everytime I go to Yamada Electronics I get a points card, and then give it to the Suzukis cuz I don't know what it does, nor do I think I shop there enough to ever recieve the pot at the end of that rainbow. I even have points cards to the 2 grocery stores I shop at the most. But these are a little different as I get points for bringing my own shopping bags. And then I just got what I consider the craziest one yet. It's for the vending machine on my corner. I have no clue how many points I have on the card, or how many it takes to get the baseball hat that says DyoDyo, or the cute little bear holding a red heart, or the poster of the Japanese pop star. But it just seems like a waste not to accumulate some points everytime I buy another Mystio or the drink with the orange circles on the front.