The cannons produce fish and striped candies. Multiple striped candy + fish candy combinations will work, but it is not convienent to use them, as the striped candies, the fish candies, and the blockers are located in the same rows. Instead, try activing them by using Sprinkleshell.
In the 2nd board, the wrapped candies are in the center of the honey. Blast them as soon as possible. Striped candy + wrapped candy combinations will also work.