Thats one weird assignment lol.

Maybe you can take a picture of one of your friends that works there smiling at the camera with that little smiley face guy..lol I dunno..

Maybe giving him a Hi five lol.

Or.....take a photo of people walking into the store but make sure you can see the sign....

Good luck.

(No not all is good about wal-mart...maybe show the hating side..the dead fish and small betta bowls take a pic of that).