Our loved ones will often show us signs in nature to let us know they are still with us. Birds, butterflies, dragonflies, and rainbows are all common signs. One of my clients buried her father's ashes in her backyard and planted rose bushes there. She says the roses are in bloom nearly all year long. Cardinals are common signs from our loved ones – maybe because their call sounds like “miss you, miss you.” One woman who knew she was in the transition process with Hospice told her grown children that if she made it to heaven, she would show them blue dragonflies. When her oldest daughter came home from the funeral, two blue dragonflies flew into her house and stayed there all day.
Once we die, we are pure energy, so it's harder to manifest a body than it is to manipulate nature, metal, music or electronics. It takes a lot of energy and lower level, denser earth energy to manifest a body which is why people tend to report seeing ghosts more often than their loved ones in heaven. Since ghosts are earthbound, they have more access to the denser energy to help themselves appear to us. Spirits who have crossed over to heaven are lighter in energy and happier too.