LEGO ideas (with traditional bricks) I would like to find a large catalog of LEGO designs/ideas that can be built with "traditional" LEGO bricks (both normal and DUPLO).

I have found many nice designs in the web, but most of them require exotic pieces. I am interested more in a catalog of models (for inspiration) that do not require me buying a specific set or making a specific order to the LEGO shop.

I found this book: http://www.amazon.com/exec/obidos/ASIN/0756686067/geekdad0b-20
 but I am wondering if a free resource exists somewhere ?

UPDATE:

I have just read this review of the book I linked above, apparently, it also suffers from the problem of requiring too many non-standard pieces:


  We thought this book would be great since my 5-year-old is just
  getting into LEGO bricks. Opened it up and realized that every project in
  this book looks like it requires non-standard, specialty LEGO kit
  pieces- and lots of them. I didn't see any projects in this book that
  you could build using standard LEGO pieces. Returned the book the next
  day.
LEGO has released a number of large brick buckets over the years. A few of these came with instructions and ideas for models that could be built with the contents. These include lots of ideas for animals, vehicles, and structures. Here are a few examples:







There are plenty of ideas available if you browse through the instructions for these sets. Here are some of the larger brick set with links to their instruction scans:


7825
7836
4104
4224
515
1615