If the kids have had too much screen time during these summer school holidays and you want to get them moving, how about a game of squash? Ambarvale Recreation Squash (ARC) have $8 squash or racquetball hire throughout January. $8 gets you an hour of court time and if you don't have your own racquets, equipment is available to hire.
The ARC is open 9am to 9:30pm until 24th Jan and thereafter from 5pm to 9:30pm. Closed on Australia day. Bookings after 8pm are essential.
The centre also offers squash training for juniors. Give them a call on 02 4626 3033 for more info.