You could post on here, on the jobs forum here, or on a freelancer job site.
Whichever, you'd need to try to specify as clearly as possible just what you might be looking for (the delivery requirement) along with any info you have on schedule, process, target audience / desired quality and cost level.
You might not offer all that to everyone - you could post a call for expressions of interest based on a more limited amount of info ..
Widgets .... term still finding a definition, after recend adoption by makers of tiny apps for web or desktop deployment. Previously, a mythical piece of hardware made by manufacturers in economic theory ...
It is vital that you describe exactly what you're looking for. If your widget is, say, a slideshow, I could probably make it for you in a few hours. If It's a chat room, it would take much longer. "Widget" doesn't tell the programmer anything useful. He won't be able to give you an estimate unless you tell him what kind of widget.
Author "After Effects Expressions"
Co-author "After Effects For Flash, Flash For After Effects"
Artistic Director, Folding Chair Classical Theatre, Inc
Senior Flash Developer, Zeitbyte.com