Here's a pretty thing. Mithril. As light as a feather and as hard as dragon scales. Let me see you put it on. Come on. Oh! My old ring. I should very much like to hold it again one last time. I'm sorry I brought this upon you, my boy. I'm sorry that you must carry this burden. I'm sorry for everything.
Bilbo gives Frodo a few items to aide him in his journey to Mordor. As they pack the pull off the Ring momentarily brings the worst out of Bilbo. He reaches for it with a snarl.