Symbols: apples, acorns, wine, pine cones, gourds, grapes, grains, dried seeds and leaves, vines, horns, scythes, sickles, squash
Colors: red, maroon, gold, brown, yellow, scarlet, purple, blue, violet, indigo, orange, autumn colors
Food and Drink: apples, dried fruits, nuts, squash, pomegranates, breads, grains, seeds, potatoes, carrots, onions, wine, grapes, cornbread, beans, mutton, ale, cider
Herbs: ferns, honeysuckle, marigold, milkweed, myrrh, pine, rose, sage, tobacco, thistle, wheat, barley, oats, aster, mums, oak, hops, cedar
Deities: Mabon, Morgan, Epona, Persephone, Thoth, Thor, The Green Man, Demeter/Ceres, the Muses, the Wicker-man, Bacchus, Dionysus
Crystals and Gemstones: yellow agate, lapis lazuli, sapphire
Animals: dogs, wolves, goat, stag, blackbird, owls and birds of prey, gnomes, Sphinx
Magic: This is a great time for hearth and home magic, especially for placing wards around your home. Working spells to bring harmony and peace to the home are especially powerful on Mabon. Giving thanks to the Earth and celebrating kinship is the theme of this sabbat, so spend this time giving to others and reflecting on what you have to be thankful for.
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.