What are three documents that you'll put in your portfolio? are they specific to your field or unique to you in any way?

Since i'm an accountant, i will put my CPA certifications nad my Personal CV under my portofolio.
The CPA certifications could be considered specfic to my field because it basically conveyed that i fulfilled an international requirements to do an auditing task. Since Accounting jobs revolves around company's financial recording (which tends to be really private) , there is no way i could put my previous works under my portofolio

Beowulf i think hope this u