2 10 pk Free Energizer Batteries and $1 Paper from Office Depot

Hammermill Copy Plus Paper — $5.99
Pay $4.99 and submit for the mail in rebate (limit 2 per household; prints at the register)
Total: $1

Energizer Batteries AA or AAA 10 pack — $7.49
Pay $7.49 and get $7.49 back in Worklife Rewards (limit 2 per day; comes in the form of a Office Depot Rewards Card)
Total: 2 for FREE!