I'm brand new to this forum but an old hand at the crafting biz. Are you asking about actually product liability insurance or business insurance? Product liablity insurance will not be covered in your home owners policy. It will ensure you against most problems that may arise from your product itself. Business insurance will insure you against things like damage to your booth or a neighbors booth caused by you (if you do shows), or someone injuring themselves in your booth. And remember, of you are not a formal business, or your business is set up as a sole proprietor, if someone sues you and you do not have insurance, your personal assets are not protected. Not to sound like a major downer, but without business insurance at the very least, your home and all you own can be part of a law suit.

I've seen fellow artists/crafters learn this the hard way, and I just hate to see it happen when it's preventable.
Kathy