It's so easy to make that, apparently, I could do it!
Apologies for poor quality pic-churs...
Step 1: Gather Supplies
One: A cereal box (If you are using a powerful gun you made need something stronger e.g a wooden wine box...
Two: several plates and bowls of different sizes
Three: A big black marker
Four: A scissors
Five: A sheet of A4 (printer size) paper
Six: Sticky tape, duct tape, scotch tape, ANY TAPE!!
Seven: An Airsoft gun
Step 2: Draw a Target!
Take the largest plate and trace it onto the paper using the big black marker,
Then take the medium sized bowl and trace it onto the paper using the big black marker,
Then take the ickle bowl and trace it onto the paper using the big black marker.
Number it or colour it, go wild people!
Step 3: Creating the Bullet Catching Thig-a-mo-bob
Step 4: Sticking It All Together!
Step 5: You Are Now Finished!
Shoot it to bits, then when you are done, repeat steps two and four!
Step 6: Lazy?