‘Til death us do part’ is usually reserved for weddings. But as sustainability becomes a bigger concern, it could be applied to our prized possessions, from cashmere jumpers to iPhones. But how achievable is this in a world where acquiring and upgrading are the status quo?

The collapse of Rana Plaza in 2013 exposed the painful human cost of fast fashion, compelling many retailers to change factory policies. Some entrepreneurs have seen a gap in the market for feel-good garb, but does ethical clothing represent as large an opportunity as some in the industry claim?

“If socks can have a lifetime guarantee, why can't anything?” asks entrepreneur Tara Button. This is the premise behind her online store, Buy Me Once. It only stocks products – from tables and chairs to towels and toothbrushes – that are made to last a whole lifetime.

You may strive to live an eco-friendly lifestyle, eating organic produce and taking public transport to work instead of driving. But what about your clothes? It's often difficult to find out how ethical your favourite fashion brands are. Australian app Good On You is looking to change that.