It's an age-old way of passing the time, the humble wordsearch! Use them in the classroom to your advantage; as a starter, a filler or a way to reinforce spelling and pronunciation of key words. Even better, you could split students into groups and ask them to make the wordsearches to give to each other.
This link is for a simple wordsearch maker from the website www.teachers-direct.co.uk. Or you could save yourself some time and download other pre-made wordsearches from this site. Keep a few spares because you just never know when you might need them.