I don't feel this is as productive as it could be.
In fact, Varana has spent a fair amount of time over the years among the scholarly Ce-Matoran, learning what he can from them, often interviewing the eldest of the Ce-Matoran regarding times past, and such momentous events as the Great Exodus and the heroic feats of the mighty Toa. Varana has also traversed the eerily quiet halls of the temple of De-Congro, poring over any texts contained within the sacred building, as well as searching for any hidden treasures and lost texts the temple may house when he's certain no one is looking. As of now, he has yet to find anything of particular interest even within the most remote corners of the temple.
A large, heavy, and wickedly sharp sword that he found hidden under an old shrine in Fe Congro. He is convinced that it once belonged to a Toa, but has thus far been unable to figure out what it does other than slow him down and cut through virtually anything like warm butter (the floor of his workshop is littered with grooves carved by him dragging the sword around). He keeps this sword in his workshop most of the time since it's too big to lug around with him everywhere even if it would make a formidable weapon if he could wield it (which he can't).