We bought a nice 3 layer stainless wire basket unit from a kitchen shop. Was held together by chains. Designed for home use but very good for the boat. First tack, the chains broke, food
everywhere. Replaced them with cord and a bungy on the bottom to control swing. Works great and stores a huge quantity of fruit and veggies. Bottom basket about 16", middle about 14", top about 12" diameter. Has served for 7 yrs.