It is possible to customize your own keyboard shortcuts for accessing different options in Ditto. You can configure how many clips Ditto can store and when the entries will expire. Wait, best features are not mentioned yet. When you need to access the stored items, just double click on item and it would be copied to clipboard. All the entries are neatly arranged in rows. It manages all your entries in very efficient and compact manner. It is highly configurable and filled with a lot of useful features that make it one of the most loved clipboard managers.
It is free, light-weight and open source.