In reply to Rich L: or any belay device, not just a gri gri, if you plan on using a ground anchor make sure it is solid and capable of holding a fall, if you missus is just pulling the rope through for you etc i dont really see a problem, failing that, if you 7yr old is a compus mentus one why not show him/her the skills, he will feel he is helping dad climb etc, best bet is to start off on easy climbs, mods and the odd diff, something you hopefully are not going to come off and could possibly solo and just have a play around, teach him/her to hold falls at low level. If its all from a ground anchor i can see no circus trip of you coming down and him going up. Remember its all about the fun!