South Korean designer Haneul Kim has collected thousands of used disposable face masks from his university campus and recycled them to create a stackable stool. More about Haneul Kim fashions plastic stool from 1,500 discarded surgical masks
Dezeen Showroom: Hee Welling has designed the Rely chair, which has a shell made from 100-per-cent-recycled plastic, for Danish brand &tradition. More about Rely chair by Hee Welling for &tradition
Dezeen showroom: Swiss furniture brand Vitra has launched the Tip Ton RE, its first chair made from plastic recovered from household recycling collections. More about Vitra remakes Barber Osgerby's Tip Ton chair from recycled plastic
Dezeen Showroom: Italian furniture brand Magis has launched the Bell Chair, an affordable, stackable monobloc seat made of recycled polypropylene by Konstantin Grcic. More about Bell Chair by Konstantin Grcic for Magis
Italian brand Magis has launched Bell Chair, a lightweight, low-cost stackable monobloc chair made of recycled polypropylene. In this exclusive video produced by Dezeen, designer Konstantin Grcic explains how he created a product that is "just over half of the weight of a normal chair". More about Bell Chair by Konstantin Grcic for Magis costs just €77 and is manufactured in less than a minute
Dezeen Showroom: The pebble-like shell of the Adell chair is made from recycled plastic and designed by Arper to offer users "a welcoming and generous place of rest". More about Adell armchair by Arper
Royal College of Art student Thomas Gossner has rethought the design of public, space-saving fold-out chairs, creating a swing-like seat made from a single sheet of thermoplastic. More about Thomas Gossner's wall-mounted Flair chair takes cues from plastic lunchboxes
Architect Safia Qureshi wanted to change the world but ended up designing private houses for rich people. So she invented Cupclub, a circular-economy service that could eliminate single-use coffee cups. As it launches in London, she spoke to Dezeen about the project. More about "It makes you a bad designer if you make something that can't be recycled" says Cupclub founder
Department store John Lewis and furniture manufacturer Hille are relaunching British furniture designer Robin Day's iconic 1963 injection-moulded polypropylene school chair. More about Robin Day's 1960s stackable Polyside chair relaunches
Dezeen's A-Zdvent calendar is back for another year! For 2014, we're bringing you an iconic chair design every day in the run up to Christmas – starting with A: the Air-Chair by Jasper Morrison. More about Dezeen's A-Zdvent calendar: Air-Chair by Jasper Morrison
Seoul-based Centimeter Studio's injection-moulded chairs slide along the floor on sledge-like bases to nestle into one another without being lifted (+ slideshow). More about Centimeter Studio's Sleeed chairs slide together to stack horizontally
Designer Alex Suarez of Amsterdam and Los Angeles studio SpaceOperaForm has created an installation at a former salt factory in Hallein, Austria, comprising translucent panels that react to the static charge of visitors. More about WhiteOut by SpaceOperaForm
Dutch Design Week: Dutch designer Chris Kabel has won the €15,000 Doen Materiaalprijs 2009 for a chair and bench made entirely of polypropylene fabric. More about Seam Chair and Bench by Chris Kabel