If there’s a Kroger nearby, try to find one of their cardboard Mars displays. It should have some manufacturer’s coupons on it for $0.50 off on two candy bars. Now, Kroger is also selling those candies for $0.59 each... So when you buy two with the coupon (and your Plus card, which is free if you don’t have one yet) it comes out to $0.70 for two full-size candies.
Recently, I haven’t seen any coupons on the displays... People keep taking the whole brick of them. But maybe you’ll have better luck. I did get five of them off of the first one I came across.