LibreOffice's applications make it easy to open documents you have worked on recently, and it doesn't matter what type of document.
The StartCenter and all six of the applications have a Recent Documents sub-menu in the File menu. The applications also have a Standard toolbar with an Open icon in it.
The Open icon has an arrow to the right of it. When you click it, a list of up to the 20 most recently opened documents is revealed.
In the left column of the StartCenter is a Recent Files item. This also lists up to 20 of the most recently opened documents. They are in the main column, to the right of the left one. The documents are displayed in a grid format, with icons representing the documents, rather than in a list.