Avengers #77 comic book from Marvel Comics Group
Gotta like the Avengers doing manual labor.  I doubt the Justice League ever stooped this low. 
I personally would like to see them stocking shelves and flipping burgers, but this is pretty good.

       

This is a scan of an old comic book. This item is not for sale. But you can find it on ebay. Click below to go to ebay and search!