Curious about the contracts you use

Hi! I was wondering where you all get your contracts, or if you make your own, etc. A little background on me- I was working as lead and assistants in ECE centers/daycares for 5 years before transitioning to a nanny. My first family was from the center I was working at the time and I was with them for 5 years. I didn't have a contract, I'd known them for a long time, etc, and when the kids aged out I knew I needed contracts from that point on. I haven't found one that includes all the stipulations I'm looking for - severance pay, PTO, etc- so I'm wondering if there's a common contract you like to use or a certain place you get them from, or any recommendations. Thanks!