Retinize It – Photoshop Actions To Create Retina-Display Images
Retinize It is a set of 2 free Photoshop actions where one of them slices the selected layer (or group) and the other for slicing + scaling it by 200%.
Micro Icon Set – 110 16×16 pixels PSD Icons
Micro Icon Set - includes 110 icons in total and is 16x16 pixels. This is entirely vector and can be scaled to any size if needed. It also includes a photoshop PSD.