Effective civilian action against Israeli produce in protest against its military strikes on Gaze could include boycotting all Israeli export produce.
From http://en.wikipedia.org/wiki/Economy_of_Israel
The major industrial sectors include metal products, electronic and biomedical equipment, processed foods, chemicals, and transport equipment. Israel possesses a substantial service sector and the Israel diamond industry is one of the world's centers for diamond cutting and polishing. It is also a world leader in software development and is a major tourist destination. In 1998, Tel Aviv was named by Newsweek as one of the ten most technologically influential cities in the world. American billionaires and business tycoons including Bill Gates, Warren Buffett, and Donald Trump have each praised Israel’s economic environment, and the country was the destination for Berkshire Hathaway's first investment outside of the USA when it purchased ISCAR Metalworking, and the first R&D Centers outside the USA for companies including Intel and Microsoft. The country has now become known as Silicon Wadi.
Israel has signed free trade agreements with the European Union, the United States, the European Free Trade Association, Turkey, Mexico, Canada, Jordan, Egypt, and on 18 December 2007, became the first non-Latin American country to sign a free trade agreement with the Mercosur trade bloc.