Plastic Bag Knitting: How One Riverside Entrepreneur Built a 14-Year Livelihood from Plastic

In Riverside, just outside the northern suburbs of Johannesburg, Gugu Nkosi is proving that a sustainable career can be built from the things the rest of the city throws away. For fourteen years, the forty-four-year-old entrepreneur has been transforming discarded plastic bags into intricately knitted carpets and household items. It is a business born from a childhood hobby, a bit of ingenuity, and a deep connection to her late grandmother, Ester Masango.

From Memory to Medium

Nkosi first learned to knit at her grandmother’s side in Mpumalanga, spending precious moments learning the rhythm of the needles using traditional wool. When her grandmother passed away, Nkosi was heartbroken and stopped the craft entirely. It was only later that she realized continuing to knit was the only way to truly keep the memory of her mentor alive.

When she relocated to the Fourways area in 2012, she began experimenting with an entirely different material: thin-film plastic grocery bags, commonly known in sustainable design as plarn. What started as a therapeutic hobby in her spare time quickly shifted when a passerby noticed the quality of her work. Impressed by the craftsmanship, the woman offered to market the plastic carpets at her workplace, returning shortly after with ten orders. That single interaction transformed a personal pastime into a primary livelihood.

The Craft Process

The technique requires an immense amount of patience and physical focus. Nkosi collects discarded bags from the community, trimming them into long, thin, uniform strips that mimic the texture of yarn before rolling them into separate balls based on colour.

To overcome the friction of the material, she relies on a simple, clever intervention: a touch of Vaseline. Applying it to the strips smooths the plastic, allowing her to knit without the material snagging or detangling. The result is a collection of durable, geometric carpets that carry the texture of traditional textiles but possess the resilience of industrial recycling.

The Reality of the Loop

Nkosi’s independent response to waste management comes at a vital time. South Africa produces over two million tonnes of plastic waste annually, with thin-film bags being among the most difficult to process in commercial plants, often ending up blocking city drainage systems.

While not everyone has the training to convert plastic into textiles, managing household waste intentionally is a powerful way to support this informal eco economy.

• The Clean Separate: Before discarding grocery bags, bread packaging, or courier sleeves, rinse and dry them completely. Clean, dry plastic is highly valued by independent crafters because it requires no pre-treatment.

• The Colour Sort: If you are storing bags to donate to community upcycling projects, taking a few minutes to group them by colour saves hours of preparation time for the makers.

• Support the Loop: Purchasing finished items like outdoor mats or reusable bags directly funds independent livelihoods within the local economy rather than large corporate structures.

The Bottom Line

We often treat upcycling as a modern corporate trend, but for Gugu Nkosi, it is a daily commitment. Even when she has no active orders, she sits in her home and knits whatever comes to mind, driven by a deep love for the craft. Her story is a reminder that value is rarely about the raw material itself. It is about the patience, the imagination, and the heart of the person holding the needles.