I loved how when they all received those gifts, each seemed rather stupid. A children's book, a snitch, and a light put-outer lol. Early on I figured the book must relate some important story concerning the quest, but I thought it would be about horcruxes. Until it was explained I thought the Deathly Hallows was a location or something.
And when it was revealed the cloak was one, I immediately thought back to Dumbledore taking the cloak from James the night he died. That brought even more doubt about Dumbledore into my mind at the time, and I began to really think he was power hungry for them. He took the cloak, dueled for the wand (which I also "got" before it was explained), and greedily took the ring/stone which would have killed him with or without Snape's help;. But despite all that I still trusted Dumbledore, and in the end it all worked out his way. For the greater good...
Another little thing I liked was the Taboo thing. For 6 books it was always strange that wizards still referred to Voldermort as "you-know-who"; it always seemed like a quirky little thing relating to fear. But in book 7 you see exactly why he was referred as such during his previous reign.