It doesn't seem like the elves would really need anything to improve their lives- at least not for the reasons that humans try to improve life. Since the elves are already immortal and immune to illness they have no need for modern medicine, one of the biggest technological breakthroughs. Elves seems like a very aesthetic race, so they seem to be more interested in make beautiful artwork (like the Silmarils) than items that are purely functional like guns, factories, cars, etc. And they wouldn't need radios, TV, movies, etc because they seem to delight in things like poetry and song that relate their history, rather than listening/watching dumbly to contrived storylines. Like I said, elves seem to like beauty over practicality.
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Isil was first wrought and made ready, and first rose into the realms of the stars, and was the elder of the new lights, as was Telperion of the Trees. Then for a while the world had moonlight, and many things stirred and woke that had waited long in the sleep of Yavanna. The servants of Morgoth were filled with amazement, but the Elves of the Outer Lands looked up in delight; and even as the Moon rose above the darkness in the West, Fingolfin let blow his silver trumpets and began his march into Middle Earth, and the shadows of his host went long and black before them.
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