Office depot has several items that are FREE after rewards.
Check out this LINK
You can buy TWO of each item EACH day. Last time they had cases of water – I went back each day and picked up two cases of water – and a few other things I could use! I was a little worried I would not get all the rewards – but I DID!
NOTE: Last time this did not work for Star Teacher Rewards Members – This time it does!