Upping Your Word Count
For NaNoWriMo, you want as many words as possible, in as quick a time as possible. There are ways you can do that without technically cheating.
You can cheat, there's no way the word counter can catch it, but what's the point, then? This is a personal challenge, it's not like you're getting a money reward. Seriously.
You remember Mojo Jojo from The Powerpuff Girls?
Well, even if you don't, a lot of his speech was quite redundant. He said the same thing about three times in three different ways. Try it. If you don't like the way a sentence sounds, don't delete it, just rewrite it and keep going. Better yet, have a character with a penchant for over explaining, or tell the same story again and again.
Write Out Numbers
And full names. Have someone introduce themselves using first and last name and any and all titles. Have them require that they be called by their full name.
As for the numbers. 22 becomes twenty two. One word, into two. A little bit adds up quickly, believe me.
Dreams and Flashbacks
So very, very, useful in boosting word counts. Have a scene you've ALWAYS wanted to write, but it doesn't really fit in with the plot? DREAM SEQUENCE! Something someone said made you or a character think of something in his/her past? FLASHBACK! Most people can get an easy one thousand words out of one.
Contractions Be Gone!
Do not use contractions in your narrative. Have a character that speaks with no contractions. It does not matter if you cannot explain it at the moment. Just do it. If you do not have a reason for it, change it all in editing. Again, a little bit goes a long ways.
How do you boost your word count?