Stones painted as strawberries when put around strawberry plants in the spring will keep birds from eating your ripened berries. Birds experience the stones first and will think the ripened berries are rocks.
20 Insanely Clever Gardening Tips and Ideas (with pictures!) - Epsom salts in the soil for tomatoes and peppers. Add a Tablespoon or so in the soil when first planting and then sprinkle more into the soil when mature.