Symbolism: rebirth, new life, new beginnings, resurrection, fertility, balance, youth
Symbols: rabbits, bunnies, eggs, chicks, daffodils, tulips, baskets, sprouts, lambs, ribbons, butterflies, bees
Colors: pastel green, yellow, and pink, gold, grass green, robin's egg blue, red
Food and Drink: hard-boiled eggs, deviled eggs, honey cakes, dairy, leafy green vegetables, flower dishes, sprouts, fish, hot cross buns, sweet breads, milk, chocolate, jelly beans/eggs, lemonade, fresh fruit
Herbs: acorn, celandine, crocus, daffodil, dogwood, Easter lily, ginger, hyssop, linden, honeysuckle, iris, jasmine, narcissus, peony, rose, violets, woodruff, forsythia, spring flowers
Deities: Eostre, Ostara, Aphrodite, Athena, Cybele, Gaia, Isis, Persephone, Venus, Maiden, Pan, Cernunnous, Green Man, Adonis, Mars, Osiris, Thoth
Crystals and Gemstones: amethyst, aquamarine, rose quartz, moondstone, bloodstone, red jasper
Animals: rabbits, hares, chicks, robins, lambs, snakes, unicorns, dragons
Magic: Ostara is the sabbat of new beginnings and life. Fertility magic (especially through the use of eggs) and garden and seed blessings are commonly performed during this time. Use this sabbat to perform magic to break away barriers, start new projects or inventions, and breathe new life into your home and garden. This is also a great time to celebrate balance as day and night are equal on this day. Color eggs to attract different things such as love, fertility, wealth, and prosperity.
Please note this is not a complete list but a brief overview of symbols, colors, herbs, deities, and the like. If I have missed something that you feel should make the list, please feel free to contact me via the comments or through email.