It is appropriate to plant the seeds from the fruit consumed in ritual. If they sprout, grow the plant with love and as a symbol of your connection with the Goddess and God.
Wheat weaving (the making of corn dollies, etc.) is an appropriate activity for Lughnasadh. Visits to fields, orchards, lakes and wells are also traditional. The foods of Lughnasadh include bread, blackberries and all berries, acorns (leached of their poisons first), crab apples, all grains and locally ripe produce. A cake is sometimes baked, and cider is used in place of wine. If you do make a figure of the God from bread, it can be used for the Simple Feast.