I love bubble gum cards. Not only that, I love Baseball cards with large bubbles being blown in them.
Above is Ken Griffey, Jr.'s 1995 Pinnacle Baseball card. It features one of the largest bubbles I've ever seen. Unfortunately, it is as fake as Barry Bonds records. In order to blow a bubble that large you would need a giant gob of Big League Chew and jaw muscles strong enough to to snap steel. Regardless of the poor photoshop work, though, I've added this card to my collection of players chewing gum and blowing bubbles.
I tend to have a wide variety of collection interest. One the most fun is the chase for cards with weird and usual photos, like bubble blowing ballplayers. Other favorites are players signing autographs or just plain funny pictures.