One of the best things about being a Baseball collector is the large variety of cards and memorabilia items you can add to your collection. You can focus on something common like Baseball cards, autographs or pins. But, for the more adventurous you can focus on items more obscure. Here is a great example.
This is a vintage, circa 1907, comic themed postcard that is Baseball themed yet makes light of a challenge I'm sure we all faced as kids. How can we convince Mom to let us out and play? Check it out above.
A collectible like this can be purchased at a very affordable price. In this case, for under $5.00.
(eBay Auction Link)