My two are now in their 30's and started their curry tasting when only a few months old! They are passionate about any form of curry now, and are brilliant cooks to boot. I, my wife, and a lot of my generation started on what they called the English curry, i.e. sultanas raisins mango banana peaches galore; very malaysian or even kashmiri. They were concocted from memories of our troops etc., in India, Burma, Malaya and so on.
I wouldn't go near the stuff now or would my kids, however it may well be worth you considering fruit & meat curries of some sort, e.g. West Indian, Polynesian, Malay. They need not have any chilli hotness and you can introduce them to the other spices by stealth.
Good luck
CP