so add an egg or some nice non saturated oil.  the fun is in feeling it out.  with cookies you can kind of wing it.... seriously... I throw the kitchen sink in.

rye flour, corn flour... some oatmeal... throw some flavour... some sunflower seeds... sesame seeds... anise seeds, some wierd nuts... don't be limited by a cookbook. go to the store and look around.  take a look at some of the heartier gourmet breads and see what is in them... then come back and throw it in the cookie...

I make pancakes the same way... different everytime.. that is the fun!