This website has some games on it but what I really like is the seating chart, group generator, and random name generator. I used it for student teaching and it is easy to upload a class list (make sure to just use their last initial for safety purposes).

This site allows you to search any word and see different meanings and associations with other words. This could be helpful for students when learning new vocabulary or even old vocabulary and discussing which meanings are applicable to your subject and what you are learning in the classroom.