3D Tip of the Day
This is for the vector-friendly designer dorks in the audience. To make a quick button with some depth, draw a circle with a thick stroke. Apply a linear (not radial; it's tempting, but don't do it) gradient diagonally to the fill, then do the same with the stroke, just in the opposite direction. Voila! Nice, clean button with illusory depth. You are so crafty.