Ningengirai.net offers a small but really nice collection of Photoshop brushes. In total there are 8 large brushes sets available for download plus 3 sets of 100*100 pixels brushes that are mainly for icon creation. My favorite of all the brushes sets that Ningengirai offers is by far the Decadent Boxes brush set. It’s really small (just four brushes included) but they are really nice. Along with the brush sets Ningengirai offers for download the image packs from which he created those brushes.
Below is an example from the Decadent Boxes brush set.
You can find the brushes here.
Also check out the rest of the site as well, they offer some more goodies for download like textures and Photoshop gradients.