how to create/generate the Item cost without Misc receipt or purchase receipt ?

Summary:

I have a requirement for creating the cost of new items without doing miscellaneous transaction or purchase receipt.

If anyone has a explanation or any document supporting , it would be helpful.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):