Self-Contained Marvel

Displays the wooden box, with a small window in the top which allows a view of the interior which is empty.
Borrow a dollar bill (or any small object) and then place the box and bill behind your back for a few seconds.
Now the bill is inside the box, just that quick!

The spectator may examine the box & will not find the secret.
Again place the box behind your back & in an instant, the bill is free from the box and the box may again be examined.
This effect can just as easily be performed under a handkerchief in front of the spectators.
Self contained.