The most indelible media for Scripture is the inculcation of Bible doctrine into the soul for processing by the Holy Spirit as spiritual knowledge in our heart.
Great links for the beginnnings of worship. It's been said the most beautiful music in God's ears is the bristling of Bible pages by students of His Word. Today we are fortunate for the percussion of keyboard clatter and ballet of mouse motions to further that devoted display.
Oh I agree - the greatest engraving is in our hearts.
I was just ruminating - the ancients left records to perpetuate the word (plus the oral tradition). I was just doing a "what if" scenario - shouldn't there be some indelible Rosetta Stone-like object for generations yet unborn.
For example, much of the film and video records of the 1950's are unplayable - Just try finding the machines on which to play them.