Web Widgets--- A web widget is a portable chunk of code that can be installed and executed within any separate HTML-based web page by an end user without requiring additional compilation.

Google Gadgets for your Webpage 

fancygens.com

 Create your own Google Font

Cooltext.com Design custom logos.

Make a realistic looking Newspaper Clipping.

Spell with Flickr:  Spell a word using images from Flickr

Free Hit Counter: Tiny Counter 

Add snapshots to your webpage.. http://www.snap.com/

Large group of icons to add to webpages, wikis, blogs, presentations.... etc.

http://commons.wikimedia.org/wiki/Crystal_Clear