Where can I find good (and free) freelance contract templates?

I may be doing some freelance video shoots in the near future for an long-term project that will be off and on in frequency.

I want to get the proper agreements/contracts in place so everything is good and legally binding, but it just needs to be very basic. It’s not as if the job will have high production values, or anything, but I still want to protect us both.

Where can I find MS Word templates of a freelance contract/agreement or instructions on how to create one myself? And for invoices, too, while I’m asking.