Maybe what you are looking for is a note keeper/organizer where the notes are easily searchable. Something like Circus Ponies' Notebook or Voodoo Pad. This way you don't have to save a new document each time you want to add a note, web link, image, or sound clip. I leave VoodooPad Pro running all the time.
Each have their strong points.
Notebook is a more complete experience, formatting numberd lists and sublists is easier. As well as more eye candy, stickies and post-it flags, and animations. Notebook also provides a service to clip from within any application and add it to your Notebook document.
Voodoo Pad Lite's price is right and provides most of the functionality of the regular version. VoodooPad has a higher geek factor, you can embed scripts in real languages (Python, Lua) and execute them from within Voodoo Pad. The Pro version includes whole document encryption and a built it web server.
Both have demos available of the full version so give them a spin.