In the OP’s cite “The Gospels says that Jesus celebrated the Easter rite in a decorated room, furniture with divans (Mark 14, 15).”
EASTER ?!? … Jesus wasn’t quite dead yet … I think we’re going to need a more credible citation for this claim … one that knows the difference between Passover and Easter.
“This is the conclusion of Professor Antonio Beltrán, published in 1960 under the name of “El Santo Cáliz de la Catedral de Valencia” (“The Holy Chalice of the Valencia Cathedral”). It was never refuted and is the base of the increasing respect and knowledge of the Holy Chalice.”
Indiana Jones said it was a wooden cup fit for a carpenter, that’s never been refuted either.
Martin Luther listed some of the relics on display in churches in the 16th century, including:
a flame from the Burning Bush
the banner with which Chriat harried Hell
a wisp of Beelzebub’s beard, which had stuck to said banner
half a feather of St Gabriel the Archangel
the foreskin of Jesus
Freaking alcoholic Scotsmen! You need to ask yourself, “what would Jesus do?” And the answer is, Jesus would drink wine out of it, probably a nice mellow Cabernet. The scotch he would keep on hand in case he was ever having an exceptionally bad day, and then he’s swig it directly out of the bottle.