Lavender is for happiness and is also a sedative. A rose is for truth, beauty, and love. I am just referring to a few sentiments available. My book, The Language of Gifts , contains many more symbols. Essence is good, or give a ring.
Any gem is a symbol of essence.
Anything white is for fulfillment. A red candle can symbolize passion. Anything with a grape can symbolize pleasure. A green shirt is nice because green is a symbol of warmth and strength. If it has a pocket, the pocket is near the heart, which is a symbol of love.