I thought this was a great idear. Its really so darn simple I think I can get it out in just one more sentence. Crush up egg shells and sprinkle in the holes you plant your tomatoes. Why? So you can have eggy tasting 'maters. NO! The calcium in the shells helps to prevent blossom end rot. I had a dicker of a time with that last year so I am trying it this year.
One more trick....when you plant tomatoes, plant them deeply. I leave about 4 inches of the plant on top. All those itty bitty hairs on the stem of the plant will, get this, form into roots. Nice strong, nutrient and water absorbing root systems. Be patient, the first month they will be so busy growing roots you will not see much top growth, but they will catch up in mach speed.