This quick little card would be perfect for a young boy but that's not the focus of sharing it with you. See the piece that Happy Birthday is stamped on with a kind of a green camoflage look to it? It was made by stamping with scrap rubber. After you push out the stamps, you're left with odd shaped rubber scraps. I took a couple and trimmed around a bit, then inked them up. Great for backgrounds!
Here's another sample with the same scraps.....
So look at your rubber scraps. Keep in mind that you can die-cut shapes from the rubber too. I'll show that another day.
Have fun and enjoy your creativity- however you express it!