In the friendliest city on the planet it is not hard to find things to do with the family. There is something here for everyone. Here is a fast guide to some of the perfect things to do with children in Chiang Mai.
Samoeng Loop or as it is often called Mae Sa Valley loop is a great outing if you want to get close to nature without having to check out from you hotel in Chiang Mai. It can be done as a half day tour or full day. Depending on how many stops you want to do.
Kantoke, to dine traditional Northern Thai dishes while being entertained by Lanna dancing is a good introduction the culture of Northern Thailand.