This is from personal practice, I encourage people to look into epithets and associations to find what works for them, these are just what works for me or information I use regularly in my own practice or have noted down in my grimoire.
Epithets: Ploutôn - Of wealth. || Polysêmantôr - Ruler of many. || Polydegmôn - Host of many. || Nekrodegmôn - Receiver of the dead. || Chthonius - Of the Underworld. || Eubuleus - Of good counsel. || Moiragetes - Guide or Leader of Fates.
Colours: Black, greys, deep purple, deep blue, silver, gold.
Symbols: Cerberus (three-headed dog), helm of darkness/cap of invisibility, bident or scepter, keys, cornucopia, chariot.
Stones/metals: Red coral, black coral, obsidian, garnet, diopside, onyx, black tourmaline, hematite, gold, silver, blue aventurine.
Animals: Dogs, screech owls, bats, moths, serpents, black horses, black herd animals like sheep or goats.
Food/Drink: Poppy seeds, pomegranate, olive oil, wine, milk, honey, dark chocolate, black coffee, sharp cheeses, flavored meats (especially lamb), whiskey, rum, caramel chocolate chip cookies, apples, figs, vinegar-y foods.
Perfumes/incenses: Apple, frankincense, myrrh, wormwood, sandalwood, cinnamon, rose, pomegranate, dragon's blood, mulberry.
Plants: Mint, tobacco, cypress, mint, patchouli, bay, pumpkin, yew, lavender, willow, oak, cinnamon, marigold, dandelion, daisies, lily, rose, rowan, poppy, daffodils, calendulas, asphodel, white poplar.
Misc: Coins, dark stones, bones (ethically sourced).
Devotional Acts: Visit and/or clean cemeteries, take time to research family history, organize your finances and put aside savings if possible, spend time looking after/walking dogs, go looking in wild areas for bones and interesting dark stones, visit your local dog shelter, honor passed loved ones, cook old family recipes and share some with him, donate to suicide prevention charities, tend to a garden, do spirit work (safely), volunteer at a retirement home, reflect on your own thoughts and emotions on death, help friends with loss.
