Clip the Proof of Purchase from a box of Musselman's single-serve packages.
Then, print out this coupon for a free bowling game at a participating bowling alley.
For a list of participating bowling alleys, click here.
Bring the proof of purchase and the coupon to the alley and bowl for free.
And the great news is that this offer runs through August 31, 2012.
Thanks to Moms by Heart for this tip.