Broken glass

Strange as it may sound, there exists a huge market for broken glass. Millions of glass bottles that cannot be recycled, as discarded daily in India. Shards of broken glass are used in building compound walls of bungalows. They deter robbers from scaling the compound wall to gain access to the bungalow. Glass shards also prevent reptiles like snakes from slithering over the compound wall. A word of caution: Dealing in broken glass can be hazardous and has to be done with extreme care.