I've been trying to collect some projects I can guide my students towards when they have a little code behind them. There's a few great resources:
A Java game (put it inside a web page)
This is one of the best resources I've seen, with remix-able projects. Really friendly
CSS - more advanced
zen garden is a well known playground for learning CSS. You copy the shell and then hack it to your own preferences...
HTML and CSS tutorials
http://www.quackit.com/ thanks to Luke and his dad for this one!