WebShop
An online collection of buttons and interfaces for professional Web designers. All images are provided in Photoshop format with separated layers for great personal adjustments. All styles come with a complete button set: Menu, Home, Arrows, E-Mail, bullets and separators. Also with up and down state to create hot dynamic effects for Java Script animated toolbars. Some free offerings and reasonable yearly subscription.
http://www.wbshp.com/
WebFX
Need To Change Or Modify An Image? Buttonize, Fade, Emboss, Blur and many other options are available.
http://newbreedsoftware.com/webfx/
LuminEssence Studios
100s of exquisite designer quality clipart and web graphics (buttons, bars, icons and page sets) all for FREE and updated every Thursday.
http://www.zzpixel.com/
A+B+C WEB GRAPHICS
Custom graphic design / web page graphics - gifs, backgrounds, icons, buttons, bullet points, arrows, & more!
http://www.abcgiant.com/
Media Links Free Horizontal Rules, Bars & Objects
As before ... another good selection from Media Links.
http://www.erinet.com/cunning1/textures.htm
Pub Domain
Modify anyway you wish, use as you see fit, business or personal.
http://www.fortunecity.com/skyscraper/redmond/376/FGMain.htm
WebSite-Designs Graphics Zone
Custom matching graphics, bullets, and arrows
http://www.website-designs.com/graphic.html
Jalanes's Web Graphics
Very nice! Now you can custom coordinate your web pages with family groups of bullets, rules and left & right arrows that all match.
http://www.erinet.com/jelane/families/index.html
FlamingText
Don't let the name fool you. An online web graphics generator for custom web graphics, including headers, banners, buttons, bullets, arrows, and dividers. They also have an extensive collection (60,000+) of pre-generated graphics (buttons, names, arrows, dividers, bullets, etc), plus clipart (icons, flags, maps, etc).
http://www.flamingtext.com/
FlashButtons
This tool will help you to create an entire toolbar with text and mouse over effect in seconds.
http://www.flashbuttons.com/
