This group on USA have got together and are making jewellery out of the plastics they retrieve. It's a massive problem worldwide even what is getting washed up on small islands in the pacific.. (all to do with tides or something etc)
https://www.facebook.com/4OceanBracelets/ I can't see that the proposed scheme of returnable plastic bottles will make a difference.( what is being called for at the moment) Not unless the deposit on the bottle is hefty enough to encourage the returns. Then there is the problem of storage for these things in the small local shops that sell drinks . Plastic packaging on certain foods is just as much a problem IMO, why do we need apples wrapped, cucumbers, potatoes in bags etc. ? (none of them last as long anyway, when they are packed that way) . Every household in the UK uses black bin bags .... how many does that amount to ? Plastic nappies, plastic drinking straws...we used to have paper covered in wax. Black bin bags might be bio-degradable, but there is surely some chemical residue even if they do. That in it's turn must be impacting on the landfill sites somehow.
It's a bad situation, but hopefully, things will change. I think India has a better record on such things than we do.