For our cleanup sink (Rohl farm sink), I use the sink guard and a simple suction holder that holds a dobie sponge and small plastic scrapper. I never had a prep sink before and I got a Franke beach sink (24in with 2 bowls) which comes with 2 accessory bowls (colander and prep bowl), a sink grind and a cutting board. I love love this sink and use all the accesories everyday.

Cutting board fits snugly over the main bowl or on the counter snugly against the prep/ colander bowl. The bowls can be removed and thrown into the DW which I do everyday. The sink grind fits in the main sink bowl and is a great place to dry the vitamix jars or the prep bowls as it drips into the sink. It is also a great place to place rinsed greens and veggies to drain before cutting. While I can use the cutting board on top of the sink, I find that I prefer to use it to the left on the counter.. much more natural to cut and push the chopped veggies into the accessory prep bowl. Love this.