New stripe account for every project?

Do you open a new stripe account for every new project to keep them separate? Or is there a way to have one account but separate/organize them?

Yep! From docs:

You must use separate Stripe accounts for projects, websites, or businesses that operate independently from one another. When you activate a new account, it is subject to Stripe’s standard policies and pricing—it does not inherit any special status or other similar considerations that may apply to your existing account.