You can make heart shaped cut outs from eco-friendly or biodegradable material and place them in water at a nearby river or lake. One option is to write a special message for your loved one on the cut out before you release it into the water.
As another option, you can insert some tobacco into your heart shaped cut out as an offering, if you wish. You can also say a prayer for your loved one before you place the heart shaped cut out into the water. Water is very healing, so it is good to be near water during times of grief.