How should I save these things

@RCMjr ,

Here's the way I look at it:

1. Use the most specific category you can when it exists (if it make sense). Otherwise, use other other standard, generic categories (e.g. Memberships), that approximate the basic concept of what the info is all about. When all else fails, fall back to Secure Notes.
2. Memberships are good for things that are simply names/identifier + numbers, like medical insurance numbers, auto insurance ID cards, etc. Add any custom fields you want to store things like Group or Policy #'s.
3. For things that are purely informational, with no real security value, use Secure Notes. This would be a good place for your Auto's VIN, registration numbers, etc.
4. For simple passwords (without a URL or username), you can use the Password category, or you can use a Login, sans the URL / username. Once there's a username or URL, use Login. A combination lock would fit here nicely. One caveat - Password entrys are created when you Generate a new password, so that area can become cluttered with temporary things. Be sure to clean it out if you use Passwords for your own purposes.
5. Think about how you will use a record - separate out bank account info into a Bank Accounts record for account and routing #s, phone numbers, bank name, contacts, etc. and a Login for the bank's website. Use identical titles, and find them via search or filtering. Rarely do you ever use the two at the same time.
6. Reward programs to me are semi-useless categories. The really are just Memberships, with a few extra fields. Probably these are legacy categories that essentially copied what other password managers had done. But use them if you want. You could just add a field in a Login to store the membership number, so that you have just one record.

Hope this helps a bit!