Whenever I have rewards to roll, I always look to see if there are any great deals on three products: PT, TP, and/or laundry detergent. If there is a P&G deal and I have to make a choice between a MM on one of their shampoos or a really good deal on PT, TP, or laundry products, I always opt for the latter because they are the more expensive products and they are more difficult to get free/cheap.
IF you also need batteries, I think Staples has them free after reward; then you could use the reward to buy PT (depending on how quickly you need them, of course). It's not the best deal, but it's a deal.
Oh, I thought of another one. CVS will have Scott PT in a Buy $30/Get $10EB deal starting 12/9. The "choose-a-size mega roll 6 pk. will be on sale for $5.98. So you'd buy (5) for just a tad under $30 and get a $10EB back.