Emily, this post is dedicated to you, since you think tennis is boring.
So, in the Leaky Lounge, which is the forums site for the Harry Potter site The Leaky Cauldron, there is a discussion that occurs which is titled THIPS. At first, when I saw these boards, I had no idea what THIPS were. But there were some great discussions going on and they were really active. It wasn't until I started reading the posts in-depth that I realized that THIPS was an anagram for Things Hidden In Plain Sight. The THIPS are in reference to the Harry Potter books!
Here are some of the THIPS that JK put in the 5th book that I thought were interesting:
1. When Harry sees Hagrid's face in the Care of Magical Creatures class, he wonders if the wounds were from a creature whose venom kept the wounds from healing, and not long after that, Arthur Weasley gets bitten by a snake whose venom dissolved the muggle-stitches.2. “Now I have work for each of you. Fudge’s attitude, though not unexpected, changes everything. Sirius, I need you to set off at once. You are to alert Remus Lupin, Arabella Figg, Mundungus Fletcher – the old crowd. Lie low at Lupin’s for a while; I will contact you there.”
-Albus Dumbledore, Harry Potter and the Goblet of Fire
Of course, we don't know who Arabella Figg and Mundungus Fletcher are at the time, but in the first two chapters, we come to find out that Figg is the neighbor whom Harry spent many times with when the Dursleys went out for Dudley's Birthday. And then we find out who Dung is, so that is definitely a THIPS.
=So, there. I've introduced a new thing to Harry Potter fans. You can go ahead and look for THIPS, for there are many, and I'm still amazed at how many there are. Characters that play a big role later are introduced much earlier, like Bode, who is an Unspeakable and important in the 5th book. We were introduced to him at the Quidditch World Cup in the previous book. Amazing, huh? JK is really quite brilliant with these things, and some could be hints to what will happen in Deathly Hallows.