Is there a way of customising what pages a Menu item will be displayed on? For example, I would only like one particular menu item in the sidebar menu to be displayed for one node, but the rest of the menu item links I would like to be the same throughout the site. Is this possible?
I don't know about any module that does what you need. But you could clone you menu (with Menu Clone), remove the particular items and set the visibility to the seperate menus.