Turn your household garbage into cash! That's what retail developer Sino Group is offering in a new local competition. The Greenovation Challenge is part of its effort to cultivate a more socially conscious corporate image. Members of the public are encouraged to convert old, discarded or obsolete goods into innovative home items. An example is this toy vehicle (pictured) made by a student at the Ju Ching Chu Secondary School's science week last autumn.

There are four categories for students, individuals and families. The grand prize in each group is HK$3,000, a trophy and a one-page feature in the Metropop Magazine. There are also consolation cash awards, too. There is even a most-popular prize that will be decided by internet voting. Winning entries will also be displayed in Sino Group malls in July.