I'm working on my lesson plans and was wondering what you CFI's did. My instructor told me I could either buy the lesson plans or make my own. He showed me his 3 inch ring binder full of CFI/CFII lesson plans and told me how much "fun" he had. I asked him what he recommends and he told me that it is extremely time consuming but well worth it to make your own lesson plans. He told me to make my own and that way I can learn the material better. I actually find it pretty fun making my own lesson plans and I think I'll stick to mine and not buy them. I'm curious what you current CFI's did.