Is being a part-time bootcamp instructor worth it?

Depending on your job and what you mean by instructor, you need to check with your company first to see if you are allowed to take another job. The time commitment is less relevant than the IP concerns. I would start with lightweight mentorship through bootcamps. Where you independently advise people through a bootcamp in a more casual and less committal way. That said, bootcamps aren't doing super great right now and I wouldn't expect a lot of pay or to be paid at all.