An interior designer has said that multi-purpose sinks are ideal for both food preparation and waste disposal.Gene Abel told Indystar.com that sinks that perform a range of functions work well in busy kitchens, allowing all members of the family to help out.Not only are husbands more involved in the kitchen now, but even kids are helping prep, so the advances in technology and appliances are really making it fun and interesting, she said.The report said that such sinks were an effective choice on kitchen islands and bars and added that popular sink finishes included stainless steel and ceramic.Indystar.com also said that food waste disposers could be easily installed, allowing waste to be discarded without compromising the prep area.Last week, contractor Polly Bart demonstrated to Baltimoremagazine.net that kitchen sink areas could be particularly efficient and environmentally friendly spaces.