At this link you will find links to blended raw food recipes and 17 of the most detoxifying drinks (obviously to be consumed on Shabbat-not Yom Kippur). Please don't go crazy on Shabbat and shock your system before fasting!!! Use this as your time to cleanse and make your body stronger by the end. Also, you will find suggestions for reintroducing foods as well.
One personal thing I'll be doing? Lemon water. I love squeezing lemon juice or lime juice into water. Plus, have some fresh coconut water as it is loaded with electrolytes. Happy fasting!