Note: No longer works in 1.13. New video here https://youtu.be/JdnBZhZMG_c
Need Nether Stars for beacons but killing the wither scares you? Use this neat trick to kill the wither 100% of the time with no damage.
Link to Google Docs Spreadsheet of locations: https://docs.google.com/spreadsheets/d/1XNtFUMPuwCdZtIwWy1SCQJDPgHByjPDyIEhI0UEtX-Q/edit?usp=sharing
Music Credit: Thief in the Night Kevin MacLeod (incompetech.com)