I love using Boggle like you see on Pinterest a lot for making words. I think that is a perfect thing to always have up and going in the classroom. Another take on that is called Crossword Cubes. This is somewhat the same concept. You shake the 13 die in the cup and spill them onto the table. From there, you build words as you would in a crossword. There are also point values given to each letter so you can add up points once you have done all you can.
(I found several styles of the game on Amazon and eBay.)
(I found several styles of the game on Amazon and eBay.)