Teacher Making $1M a Year Selling Lesson Plans Online
“Deanna Jump is a 43-year-old kindergarten teacher who earns less than $30,000 a year. But this year, she says she has made $1 million. Yes, really.
How? TeachersPayTeachers.com (TPT), the online marketplace that allows teachers to sell lesson plans to other teachers. Jump became the first teacher on the site to earn more than $1 million on the site by using selling her lesson plans focused on teaching kindergarteners.
“Teaching is a hobby for me now,” Jump says. “I’ve made way more on TeacherPayTeachers, obviously. I don’t need to teach anymore, but teaching is my passion. I cannot imagine not teaching.”
Source: Inc Magazine

The resources I like best tend to make use of technology in some way and may even be entirely web-based so you will need to make sure you will have an internet connection during the lesson or make provisions to download any web-based content to your computer beforehand.