Ink Grunge - Ink splatters, sharpie marker scribbles, torn paper and general grunginess - good for borders and backgrounds.
for non-compatible programs
Aged Grunge - perfect for a weathered, old, or stained look. Torn paper, smudges, splotches, and even some little splotches of graphs. One of my favorites.
for non-compatible programs
Nightmares and Dreamscape - My favorite set. Pen tool swirlies, sparklies, angel's wings, and other things.
for non-compatible programs