C3PX said:

I couldn't find a dirty old baseball to save my life. In fact, I had a pretty rough time finding a baseball period. Wal-Mart was sold out of them, and said that since Summer was over (uuuh, it is only July!) that they wouldn't be getting anymore in until after Christmas. Finally found a brand new ball and sandpapered off all the markings. Need to figure out a way to make it look old and rugged. Thought about soaking it in a bucket of mud. If anyone has any better suggestions, let me know.

Nice jorb on the dolly!

Also, I totally went through this same experience last summer when I was looking for baseballs to cut up for homemade steampunk googles for our Halloween costumes. (Instructables.com) I looked at three Walmarts and 4 Goodwills and came up empty. I finally found some softballs- which were too big, but I used them anyways.

One Sports department Walmart guy was really surprised I was shopping for baseballs. He was pretty sure they just didn't sell.