There are so many plants that can be grown from seed, but it is important to have a clear idea of what type of plant you want. If you just want a small ornamental flower, then you would prefer using float/statice seeds and containers made for porcelain or plastic pots with 3-5 inch deep pans filled 2-3 inches deep with black soil, or fine potting mix such as perlite in the bottom half of the pan, and finished off with perlite or vermiculite.