Yarnbombing can make a powerful statement, especially if you choose to use brightly coloured wool and a good dose of imagination.
In Wisconsin, Katey Smith and her team of yarnbombers are helping to lead this growing trend, taking inspiration from other textile graffiti installations around the world.
Speaking to Hutch News, she explained how her 70-strong group have been knitting and crocheting colourful jumpers for the Goodman South Madison Library.
From mid-May, visitors to the library will be able to find such treats as a crocheted caterpillar next to the book The Very Hungry Caterpillar, as well as patterned covers for book carts.
Ms Smith, who has been crocheting since she was nine years old said that yarnbombing is "blowing up", right now and is really getting younger people excited about craft.
"People are on autopilot. When you walk through a busy public setting, you're making to-do lists in your head or you're focused on one thing. I want to create things to wake people up, make them notice their surroundings," she explained.
Funded by an arts grant, the yarnbombers want to get more local people interested in knitting and crocheting and will also be decorating public spaces and setting up pop-up galleries around town.
Ms Smith went on to say that she hoped to cover book cards in every city branch library, using a variety of themes such as underwater.
"Once the yarnbombing is done and is up for a while, we're going to deconstruct everything and reconstruct them in blankets and scarves," she added.
These will then be donated to the Community Action Coalition or other local non-profit organisations.
Here they can be turned into blankets or clothing, or even unravelled to make new and exciting designs.