If you deem your mug no longer useful, remember you may still be able to use it! You could make mug cakes, use it as a pen pot or even transform it into a DIY candle. But if you need a change, and are a little fed up with them, there are multiple ways to recycle them.
First and foremost, avoid tossing them in the bin. Ceramic isn't widely recycled so it's better to give your mugs away to charities, thrift stores, or list them on freecycle.org so that they can find another home.