Awesome blog post by Sarah Margalus (who also happens to be my wife).
I have two proposals for the courageous teacher that took on this massive job. These are meant to support your efforts and empower you.
1. Start with what you’ve got (or can get for free).
2. Teach skills, not just concepts or the making process.
I, for one, see this problem fairly often. Use what you have, don’t go out and buy a fancy machine. And, teach how to do something.