Shuriken With an Elastic Cord?

Mr Cunning from a local martial arts store sends in another letter from a customer. And again we at judokong.com are forced to ask "Ninjas ... who are these people?"

"Greetings martial art store attendants,

When training with Shuriken (as i'm sure you are aware), after throwing them all, one must proceed to go pick them all out of the wall.

This interupts the training, and more importantly the flow of natural energies during the practice session. So to get to the point, I was wondering if it would be possible to have shuriken with some kind of elastic cord attached so that instead of pulling each one out I & my diciples could pull the cord to retrieve them? Kind regards [name withheld]."