I never pass up a Coupon for a FREE anything - even if it is something I will probably never use. Why?
One of my favorite stores has 2 free item coupons each week. They might be good for free milk, juice, bacon, eggs, chicken or other great stuff. Only catch is you have to make a $10 additional purchase.
I like to use free item coupons I find online in order to meet those minimum purchase requirements. Right now I have a coupon for free Excedrin up to $5.99. I don't use Excedrin, but I will "buy" it so my required minimum purchase becomes $4 instead of $10 to get the other good stuff I have store coupons for.
Don't worry, I never waste my Free stuff. I always find someone who will use it or donate it.