One family, realizing they were turning into couch potatoes, made a rule for television watching. The minute a commercial came on, everyone had to jog in place or do jumping jacks until the program resumed. This provided plenty of laughs along with some much needed movement. Look for free activities. Call your local YMCA or Parks and Recreation for a listing of free family events.
Most newspapers publish a weekly directory of church services.
Visit a church sponsoring a Saturday morning Christian clown performance or a unique gospel singing group. Take advantage of concerts, evening library storytimes, and museum exhibits. Attend a free event at a local high school or college. They often sponsor sporting events or family programs. Other family members aren't allowed to complain, because the situation is new to everyone.