In the 1960s' Heineken Brewing Company head Freddy Heineken didn't much care for seeing all the trash when he visited Curaçao. Nor did he think it was right that so many people there lacked housing. His solution:
Yes, beer bottles shaped like bricks, which could be mortared together to build housing. Consumer tests showed that buyers didn't care for the square bottles, so the brick-style containers never went on the market. Rumors that the housing departments of major American universities opposed it on the grounds that dormitories would be empty as students constructed their own dwellings are, as far as we know, unfounded.
Pity. Might have cut down on the stone-throwing, too.