Here's how you can play Scrubwords:
I've posted a page of weird English words. They're actual words; some are just not widely known, others are old and forgotten. Write individual words you want to use on separate cards, one word per card, along with the definition.
Make teams. In a classroom, you could have up to 9 teams; there are enough tiles to go around and have some left over. If doing this at home, you can play it as individuals or teams, but since you saw the actual words, you won't be able to play.
Each team gets 10 tiles, a wooden letter stand, and one card with a real word. Give them a set time to come up with words. They should try to silently arrange the letters to spell words, so as not to give them away, and other teams should be encouraged not to peak, since it may be easier to make the words flat on the table rather than arrange them on the stand. As they go, they should write down the words they come up with.
When the time is done, each team then reads off their four best words AND the actual word on the card. They'll need to do this as smoothly as possible, so as not to give away the real word. The other teams then vote for which word is the real one. After the votes are tallied -- the "reading" team gets points for guesses on their invented words; the guessers get a point for choosing the actual word -- then the team can read the definition of the actual word.
For an extra level of difficulty, you could write quick definitions for each invented word, but I'm thinking that would drag out each round.