A Field like Product Location Notes that Is Site-Wide

We use Product Location Notes to store internal information about a product. The field is not visible to the customer, but does appear on the product/order summary reports in the backend (Summary, Job Summary, Item Details, etc.).

For specific information about an order that isn't visible to customers, we have the Order Notes field.

What would be helpful is if we had a similar field at the site level. Somewhere in the site settings where we could add information that would appear on those same order report pages alongside the order notes and product location notes.

Currently, we want to add a production checklist here, but any text field where we could add information specific to that site would be helpful, like business contact information, a reminder on the approvals process, whatever information about the site we need while looking at an order summary.