There are some great images provided by the church to supplement helping the children learn about spiritual blessings. Here are just some of the great images you could use.
And again, I exhort you, my brethren, that ye deny not the of God, for they are many; and they come from the same God. And there are ways that these gifts are administered; but it is the same God who worketh all in all; and they are given by the manifestations of the of God unto men, to profit them.
And all these gifts come by the Spirit of Christ; and they come unto every man severally, according as he will.
Joseph Smith was blessed with beholding angels and ministering spirits. (This is him receiving the Aaronic Priesthood.)
Adam and Eve were blessed with the gift of faith.
Jesus was blessed with the gift of healing.
Our missionaries are often blessed with the gift of tongues as they learn new languages in foreign countries.
Moses was blessed with the ability to work miracles.