A quick tour through this year’s supermarket industry trade show in Chicago on Sunday proves the trend toward convenience shows no sign of abating, as food makers try to shake things up in a slow-growing industry.

Big companies are putting their corporate muscle into developing pre-mixed or bundled foods that travel easily and offer consumers a greater variety of flavors.

ConAgra, the maker of Healthy Choice meals and Bumble Bee tuna, are making their pitch at the grab-and-go crowd with two snacks in a tube that take their names from Hershey Foods brands through a licensing agreement.