Tomatoes need calcium to achieve their full flavor potential. When planting tomato plants crush up (to powder) about 4 or 5 egg shells and put them in the bottom of the hole. Then plant tomato on top. They'll provide calcium and prevent blossom end rot.
Use toilet paper rolls to start your plants Carrots are simple to sprout in any container deep enough to accommodate the roots. Starting carrot seeds indoors is an easy way to protect seedlings and get a head start on spring planting.