Dribbble – flat-ui.png by Riki Tanone.

Dribbble – Wood Pattern For Free by Nick Slater.

Dribbble – Flat icons (PSD) – 3 Dribbble invites by Pierre Borodin.

Dribbble – ui-kit.png by Andreea Nicolaescu.

This is a decent looking design framework for basic UI elements. Its nothing extravagant, but it covers most of the basis to get you going faster. http://designmodo.com/the-bricks/