Reuse of plastic waste
Kenian "Gjenge Makers" collects plastic waste and creats building material out of it:
https://www.gjenge.co.ke

German "Wildplastic" collects "wild" plastic lying around, shreds it and produces trash and protective bags from the granulate.
https://wildplastic.com/collections/wildbags




Plastic Collection
Germany based Clean Hub has installed a collaboration with brands funding the collection of plastic waste in Asian countries and using AI to reduce plastic waste:
https://www.cleanhub.com
 
The German company Plastic fischer fishs plastic out of rivers with the help of waste barriers ("Trashbooms"). They publish their method so that it can be copied by everyone.
https://plasticfischer.com/en/pages/3l
Interview:
http://www.gratis-webserver.de/si/6.html

The German project "Krake" (engl.: octopus) uses a big basket to fish waste out of the Rhine river:
https://krake.koeln/projekte/muellfalle/#

"Everwave" uses especially constructed clean-up boats to clean rivers in Thailand, Cambodia and Albania with the help of ai to detect the waste: 
https://everwave.de/en/





Plastic bags
The "Hansaforum" in German city Münster provides racks for reusable bags placed before supermarkets (so called bagtrees). If one has forgotten his bag one can borrow such a bag and put it back later:
https://hansaforum-muenster.de/projekte/jutebeutelbaum/





Organic Substitute
Traceless uses plant leftovers from agriculture to produce a new organic raw material, which can be used to produce bags, paper and other single use products:
https://www.traceless.eu/about-us

Greenhope has developed a biodegradable substitute for plastic based on cassava, which can be used for products like shopping bags, tissue packages,...; and a biodegradable product supporting the chemical degragation of plastic waste:
https://www.greenhope.co





Reuse of packages
African Ipod Water provides water refilling stations placed in groceries, where people can buy water by refilling their own bottles so that they do not need to buy plastic bottles:
https://www.purewaterpod.com/i-drop-water

Algramo in Chile has created an innovative system for reusing plastic packages with regards to consumer products (food, breverages, ...):
https://algramo.com/en/

German soccer club Rot-Weiss-Essen announced to introduce a returnable system for cups (for drinks like beer) starting in 2024. A local partner will build a cleaning machine for up to 50.000 reusable cups and the deposit can be donated to charitable projects:
https://www.reviersport.de/fussball/3liga/a599598---3-liga-rwe-schafft-wegwerfbecher-ab.html