A drawings of a letter out of a mail box
Here's a simple drawing of a letter being pulled out of a mailbox:
_______
/ \
/ \
| MAILBOX |
_______/
| |
| LETTER |
| |
|_________|
In this drawing, the mailbox is represented by the rectangular shape with a slot at the top. The letter is being pulled out of the mailbox and is shown as a rectangular shape with a flap at the top. The lines and shapes are simple and basic, but they should give you an idea of what the scene looks like.