‘Star Wars Galaxy’s Edge Custom LIGHTSABERS review’:-
https://www.youtube.com/watch?v=RxfWtLVYVhU - by John Carlos McMaster
Edit: He also did a follow-up video review, answering some of the questions in the comments section, here:-
https://www.youtube.com/watch?v=qD4QRiyuhDU
‘How To Get The BLACK KYBER CRYSTAL at Star Wars: Galaxy’s Edge!’:-
https://www.youtube.com/watch?v=JeY_LHqqSFc - by Happy Place Explorers