Here’s a collection of items you can easily find outside and their correspondences/associations
Grass: Psychic powers, protection, growth, nature, learning, healing, new beginnings, recovery from loss Pine needles: Cleansing, healing and strengthening. It also acts as a natural insect repellent Pine cones: Masculinity, fertility Maple Leaves: Feminine, moon magic, travel, learning, dealing with change, decision making, spiritual healing Pennies: Luck, wealth Dandelions: Divination, wishes, calling spirits Dandelion leaves: Summoning spirits, healing, purification, defeating negativity Red/purple wild clover: Fidelity, love, money, protection, the blessing of domestic animals White wild clover: Breaking curses Two leaf clover: Love, luck Three leaf clover: protection, luck Four leaf clover: Protection, psychic powers, spirit work, luck, success Oak leaf: Truth, steadfast knowledge, protection Acorn: Good luck, protection, wisdom, and personal power Walnut: Healing and protection
Feel free to add any more!