I use a game called Swat most every week to help kids practice vocabulary and word skills. All you need is a place to display words and two fly swatters (I bought the extra LARGE ones from the dollar store).
Here's how you play: display some words (I project our weekly vocabulary or some of the spelling words on the promethean board, but you could write the words on a whiteboard if you want- I did that when our computers were being replaced). Anyways, you display the words up front for everyone to see and then two students come to the board/screen and stand, holding the fly swatters, with their backs to the board. You give them a clue that applies to only one of the words and then say, "Go!" They can't move until they hear you say go, and then they try to be the first one to swat the correct word. If they win, they stay at the board, the undefeated champion, until another player is able to beat them. ;)
You have to let them know from the beginning that YOU are the JUDGE and JURY and will decide who wins/loses, of course!
This freebie is a one slide ppt that has words that apply to the beginning of the year that I use to teach the kids how to play Swat.
The clues that you use for the words can be anything from the definition, to a sentence with a blank where the word should be, to clues like "It's the only PLURAL NOUN in the list" or "It's the only 3 syllable word." I use parts of speech, verb tense, common/proper, number of syllables, contractions, abbreviations, etc.- just anything that distinguishes the word from another.
The kids LOVE the game! Enjoy!