Math
Numerical order- I have 1 what comes after...
I downloaded this cute envelopes from Confessions of a homeschooler. She has a
FREE Mail Carrier Unit Study and lots of other neat units.
ART
Make a mail carrier bag
Making Open House Invitation
I found this cute career/community helper puzzle game at Ross, Dress for less!
Writing center
Each child also wrote a letter to a classmate.
Put a stamp on it
Seal it

and place it in our classroom mailbox
I wrote all the kids a letter, here's an example, they all varied, depending on their personalities. Short and simple :)

and had the mail carrier sort through the mail and place it in the correct mail boxes.