Involunteering

 is the seventh episode of the shows third season which was first broadcast on December 12, 1992.

Summary
There’s a Family Volunteer Day at Janet's children’s museum, and she encourages the family to take part in the festivities.

But, when misfortune strikes the museum, the day’s events are moved to the Darling household. The kids get out of control until Clarissa manages to save the day, but not before Ferguson is left bound and gagged in his room.