Shooting digital because you got sick of wasting film? Think about dusting off the 35mm gear you haven’t sold and grab some new film. If you’ve been shooting as much as I have in the last 4 years (around 250,000 frames) then your eye will have improved tremendously. You’ll waste less film and have more options.
Sure, you can knock the color off or set your camera to B&W, add film grain or Velvia-like saturation, but shooting the “real” thing has its merits. You’ll want to get the shot right the first time and for a greater percentage of the shots, you actually will. This will in turn make your digital shots better; do you really like wading through all of your digital files looking for the “good” ones? Shoot less and make them worth it.