standard and mixed-state check boxes 

standard and mixed-state radio buttons

push buttons

standard and custom font popup menus

standard and proportional scroll bars

primary and secondary group boxes
title can be a check box

icon buttons
behavior can be like a push, check, or radio button

disclosure triangle

determinate and indeterminate progress indicators

sliders
can be labeled or unlabeled, horizontal or vertical, etc.

little arrows
adapter classes can automatically link to a numeric text field

list box frames
supports notch for grow box or scroll bars

focus frames
supports irregular shape for notched list box frames

tab panels
large or small tabs, plus the surrounding panel border, and adapter view switching

separator line
horizontal or vertical orientation is automatically figured out