How to get specific menu items from joomla?

This question is bit specific for Joomla.

I have a main menu consisting of:

Home|About US|Privacy Policy|Portfolio|Contacts US.

Each menu item is link to an article.

Now on the complete site there are many places in the components and modules where I need to show two links : Privacy Policy & Portfolio.

Can someone please guide me? I do not want to hard code the links as the item id would differ in production.