Amusement park trips are fun and a classic! They usually have variety and levels of rides for everyone.
Class trip to another country. This is my favorite of all the ideas. Being in a different country forces everyone to really unite and get to know each other, not only outside of school but in a new culture setting.
Another common option is an active activity. Many towns have roller skating, paint balling, laser tag, and more. Get your class together and get active!
Grammarly yours, Semirah D
Photo creds for this post. Photos used from fanpop and bing. No copyright intended.