From 300 Images From 1800 Sites, a collection of icons images, gathered from across the web. Useful if you need a quick action icon (prototyping?), or to start brainstorming on style / brand image.
The sidebar on using “backwards” arrows in the breadcrumb is a great idea.
This is the sort of thing that takes a LOT of time, to surf and really – really – look at a lot of web sites.