The last Friday of every month is special because we take the class outside to the basketball court, the school yard, etc. The activities are related to what we have been reading and are usually kinesthetic in nature. Sometimes the activities are very physical, and they always require more space than a regular classroom provides.
For example, after reading The Miracle Worker, we played a game using blindfolds to get the feel of living with a vision impairment. A lively discussion followed. I always help plan the activities, but they are usually led by a different small group of students every month. They really look forward to it!