Now we know what the leaves of the Tree of Life are in Revelation 22:2:
"..through the middle of the street of the city. On either side of the river is the tree of life with its twelve kinds of fruit, producing its fruit each month; and the leaves of the tree are for the healing of the nations," we know what to do with them.
This reminds me of a story from my childhood. My father, a priest in the C of E, regularly visited a psychiatric hospital in Kent near where we lived where he would celebrate Eucharist. He noticed that the leaves of the Bible from which he would read the gospel were disappearing. Making discrete inquiries, he found out that the inmates were tearing off pages to roll tobacco in and smoke. Remember those lovely fine thin pages (India paper) of the KJV?