I have three Scrabble Sets (none of them had all the pieces
). I put all the tiles in one of those two pound plastic coffee containers with the handle built into the side, and lid. They spill them onto rug squares and use them for whatever Word Work games I have put out. they like to use the wooden tile holders that came with the set, and I let them use the game boards if they want to. Some of the activities:
1. find the number value for each spelling word
2. arrange words by number of letters in each word
3. take one word and make as many smaller words as possible
4. lay out all the words "scrabble style" across and down
It's amazing-sometimes they make up their own games! My only rule is "same rules throughout the game, start to finish", and "play to the end".
The rug squares in my classroom were picked up at Building 19 (a favorite salvage store in MA) and were cut from casino carpeting (very low pile and practically bullet-proof). You can pick them up at local carpet stores (if they know you're a teacher, they may give you a break!) the lower the pile, the better for games. We use these for everything, but they are fantastic on a table top to muffle noise from dice, and define a playing area (if it bounces off the square, you lose your turn). Another trick is to put the Boggle cubes in a cloth bag and have the kids spill them out of the bag (no plastic box!).
Why not start with one activity and see how it goes? If they seem to be bored with it after awhile, you can introduce something new!