Snazzy Maps - Free Styles for Google Maps
The Grid System
The grid system is an aid, not a guarantee. It permits a number of possible uses and each designer can look for a solution appropriate to his personal style. But one must learn how to use the grid; it is an art that requires practice.
Gridulator: Make pixel grids, lickety-split
Tell Gridulator your layout width and the number of columns you want, and it’ll spit back all the possible grids that have nice, round integers
HTML-Ipsum
Handy stubs for lists, paragraphs, forms, etc.
Iconic Icon Set
103 icons in raster and vector format — Some Random Dude
Helveticons
Lovely icons
HTML5 Doctor
Helping you implement HTML 5 today
50 Fresh Useful Icon Sets For Your Next Design
Beautiful and free icon sets always come in handy