Hi Rachel, You don't want a fishing tackle box, or the boxes with the parts containers in the lids. Mine is a 19 inch long - el cheapo - from KMart - that has a removable tray in the inside. The tray is discarded. You want to use the space in the lid for things like flat plates and a cutting board, while the pots / pans / cups / wine glasses and utensils fit in the bottom. You also have to build a support for the lid when it's in the open position, so that it doesn't just hang down. The aim is to make use of every cubic inch of the volume that you have. The tool box advantage is it has a handle so is easy to carry. It closes and is locked: no dust or dirt during winter lay ups. It stows easily in a car and can be carried to a picnic table with one hand, while the other carries the cooler. Don't forget table cloths and napkins; as well as a sample bottle of detergent, which should last you for a week or two. Oh, and a dish towel too! Connie