I am always looking for a creative idea for Grad gifts... I'm at that age where a lot of my nieces and nephews are graduating from high school. Last year I did this... and the year before I did this...
This year I came across this link on Pinterest. The link just goes to a jpeg... and it's a Christmas gift, but I took the idea and ran with it.
I made this free printable... (link here). I just found free clipart online and added text in photoshop.
When you open the box, you find pizza "dough" made out of dollar bills (I'm cheap) and pepperoni that is quarters. I folded the bills into triangles to make it look more like pizza. Then just rolled up scotch tape and taped it to the box.
That's it... easy peasy... except maybe folding the bills.