Just came across this excellent idea at phrazzleme.com 

The idea is to make a phrase and put it on the board for points. The next person puts a phrase using an existing word from the last phrase, like a puzzle! This continues until someone wins!

You learn English because the longer the phrase, the more points you get. You get immediate rewards and this makes you want to learn English and WIN! Up to 7 people can play and you can play at a beginners, intermediate or advanced level. 200 pieces, 800 words, thousands of variations! If you already speak English, it's fun! If you don't, you learn while having fun! For all ages.

The longer the phrase or question, the more points accrued. The people who will get the most benefit from this game will be those that are studying ESL (English as a Second Language). They will learn English quickly, efficiently and in a fun manner. Accordingly, the rules of the game can be modified or simplified by the teacher or monitor by simply taking out the harder-to-use words or giving extra points for making questions. Gerunds, for example, can be taught on the very first game (these are normally very difficult to teach but, in this case, it makes the game easier to play). The main objective is that the player can learn while having fun.

Frustation can be a positive key element in playing this game since no one likes to lose a turn for writing a phrase incorrectly. The student will study in order to win games and not because he or she is being forced to learn a new language. The teacher should use common sense and patience in order to make the game more effective and educational.

It is recommended that, for beginners, the game should start out with short phrases such as " I WORK" and then be added-on to, such as, " WITH MY BROTHER" for example. The game is played with 7 pieces per player.

The game is available for oder at phrazzleme.com 

Saw this on Dave's ESL Cafe Idea Cookbook: 

I have found a great way to solve the cell phone problem. I explain to my students that although some of their teachers will take their cell phones for a week, month, semester, etc. I will only take their cell phones for 5 minutes. At first they are very happy about this, but then I explain that I will use it to call my brother back in Canada. No 001 (in Korea), no use of a calling card, just a straight forward direct call. Then I tell them they will have to answer questions about what I said while on the phone. Nobody has ever used a phone in my class.

Great idea. Kudos to that guy! I've never been able to 100% successfully solve the cellphone problem. It's texting that drives me mad!