Bottle-up the follow up in Zanzibar

In Zanzibar for a follow up of the Bottle-up project 

with OS ? OOS and Super Local

On Zanzibar, tourists have become an important source of income, as well as (glass) waste. The island is not yet equipped to process all this glass waste, which means the glass makes its way into the natural surroundings. What if the tourism that caused the waste, could also contribute to processing it?