Magical objects which render the wearer invisible and create a tie between the object itself and the wearer: the invisibility cloak and the ring. Both originated in completely different stories, but have unmistakable similarities. Hiding from death can certainly be considered shameful, yet Bilbo Baggins passed down the ring to Frodo, Ignotus Peverell passed the cloak to his son, and James Potter was almost certainly planning to give it to Harry. Did they want them to live a lie, to hide from everything they feared? No. All three proved to be strong, courageous people, even if it only appeared in their later years. None of them could have wished a life in hiding upon their heirs. It was a simple, "cheap" way of never having to face their fears—or death—until they were ready. They were promising them the life they led, but were their lives led the right way—or even worth living, to the fullest extent? One could argue that Baggins, Peverell, and Potter were intentionally passing on nothing but an addiction.
The main difference between the two is that the ring was not created solely to carry out the purpose it ended up carrying out. The inscription on the One Ring, "Ash nazg durbatulûk, ash nazg gimbatul, Ash nazg thrakatulûk agh burzum-ishi krimpatul" suggests nothing of the bad side of it. It was meant to control the others, whereas the cloak was created to protect Peverell from death. However, Gandalf's voice changed, became evil when he read these words. A regularly nice wizard turned, to an extent, evil as he read these words. Sméagol, a typical hobbit, became something only slightly short of indescribable: a dark, wide-eyed creature with no thought in his mind but the ring. Even the ever-heroic Harry Potter became obsessed with the Deathly Hallows. Both objects offer nothing but warp to the character of he who owns them, but are sought out above close to everything else. A reason for that, aside from the obvious: being unable to be found by death, is their power that stands higher than that of all else of their kind. Xenophelius Lovegood claims that the cloak "endures eternally, giving constant and impenetrable concealment, no matter what spells are cast at it." And, as I've already quoted, the inscription of the ring begins with "One ring to rule them all." Each is undefeatable, especially when compared to others of the same variety. This ring and this cloak may never be associated again, but their likenesses can no longer be ignore by those who have taken the time to read my musings.