Now that things are calming down a little, I found some time to post. I wanted to tell everyone about www.manythings.org/japanese.
Here, you can find literally hundreds of quizzes from the basics all the way up to JLPT 1. A few quizzes I found useful: 260 commonly used ii-type adjectives, and Japanese newspaper words that use no kanji (a lot of tricky, grammar point type words pop up). There is also an abundance of straight up kanji practice.