I came across 'The World Dream Bank' by Chris Wayan today. Let your imagination know no bounds. I found the section Planetocopia very interesting for its world building ideas.
If you just want dreams :-
Planetocopia is a group of model worlds supporting intelligent life. They fall into four series: Tilt! (Earth with different poles), Futures (set 1000 years from now), the Biosphere Variations (diverse experiments in planetology), and Caprices (whimsically altered Earths). Behind-the-scenes pages include the new Planetocopia interview, Carpentry Tips for World-Builders (how I make 'em), The Heart Hath Its Reasons (why I make 'em), Tech Corner (a chart comparing 'em), World-Builders (influences: others who make 'em). Here's a group snapshot of the Planetocopia family, all to scale.
If you just want dreams :-
A library of 3300+ dream texts and images, sorted by topic. Want funny, sexy, scary, spiritual, or lucid dreams? We got 'em. Dreams are uncensored, but potentially upsetting ones have warnings. Dream well! -- Chris Wayan, 2013