Get the kids a ride in a glider at Harris Hill Soaring Center. The rides last about 20 minutes. It will be an exciting experience.
Here's what they say about the age limit:
Any age young or old can take a ride. However, very young children may have difficulty seeing over the side of the canopy and may become very nervous without an adult in the seat with them. It is up to the pilot’s discretion whether a very young child can fly or not. On the other end of the scale, we have flown individuals with as much as 100 years of ‘life experience’. If you can get into and out of the glider, or you can be assisted to do so, you may fly. We cannot take medical devices such as oxygen tanks onboard, however. The pilot always has the final say whether a passenger’s condition precludes a ride or not.