CHJ's annual Sukkot celebration always includes gathering fruits and vegetables with which to decorate the Sukkah, usually at a local farm; decorating the Sukka; a family service; music; and a potluck lunch. It is a joyous family event, especially when there's good weather!
The lulav is a banner made from three myrtle twigs, two willow twigs, and one palm branch, all bound. Traditionally it is waved in four directions to symbolize the unity of the world and all people; and the unity of people with nature.
The sukka is a temporary building used for meals throughout the holiday. It can be built of any materials, but its roof must be of organic material and partially open to the sky. The decor of the interior of the sukkah may range from totally unornamented to lavishly decorated. [from http://en.wikipedia.org/wiki/Sukkot]