 Hobby every EFL teacher needs to try when teaching English abroad, get creative with wood carving. Buy yourself a small pocket knife and try a bit of whittling. This can be very therapeutic. It's one of the cheapest and most accessible hobbies you can take up, all you need is a knife, some wood, and a bit of imagination. Twigs and branches from most kinds of trees make for great whittling. Aim for wood that's fairly soft and easy to cut into. It doesn't matter how many failed attempts you throw away, you won't be harming the environment. Make a random carving and have your students guess what it might be, a fun variation on Pictionary.