Super easy and cool project.

Step 1: Materials

All you need:
1.3 dollar Walmart clock ($3 when I got mine)
2.Scissors
3.Pen, pencil
4.Picture, package, whatever you want on your clock (about 10"x10")
5. Tape or glue

Step 2: Open the Clock

Easy enough. Remove battery and then take off the clear plastic cover by pushing in the little tab thing on the back (see picture) and then just pull it off.

Step 3: Remove the Hands and Face

Just pull the hands off one by one. It's pretty easy. Then the paper with numbers just comes out.

Step 4: Stencil and Cut

Use the paper with numbers as a stencil and trace around it on the image your using. Remember to mark the middle where the hands go. Then cut out very carefully. You want to be exact. For the hole in the middle you can just carefully stab it out with your scissors or a knife.

Step 5: Assemble

Time to put it together! Put the thing you just cut out in the clock and make sure it's right side up. You can tape or glue it in if you so desire. Then put the hands back on the same way you took them off. The clear plastic thing will just pop back in.

Step 6: Enjoy!

Hand it somewhere! I would suggest your bedroom or mancave, since lady-types may not be into this sort of thing. I don't know. You can add number if you would like, but I personally never look at them.