Plant an idea in your guests' heads with these seedling favors meant for enjoying long after the party's over. The Magnolia Company offers more than 15 different oak varieties and will send you the one that's suited to the geographic region of your wedding locale ($12.50 each, minimum order six trees, seedsoflife.com).
To spruce up the budding trees as favors, simply place them in sleek sake cups. The best part? In the spirit of environmentalism, the tokens can double as centerpieces when they're grouped together, so nothing will go to waste.