On the holiday of Sukkot, we are commanded to dwell in temporary shelters or booths, as our ancestors the Israelites did in the desert after the Exodus. The commandment to "dwell" in a sukkah can be fulfilled by simply eating all of one's meals there. However, some people learn Torah and even sleep in the sukkah.
Building a Sukkah is a memorable and fun family experience. Children of every age can help.