Propagating seeds is a little like nurturing relationships: The more attention and care they get, the more likely they are to flourish and thrive. Give flower seeds with little pots that they can take root in. Put seeds in plain white coin envelopes available at stationery stores, and label with an eraser stamp. Use a rubber stamp or make a heart with thumbprints. Put growing instructions on back, noting when seedlings need to be transplanted.