What's the Kennection? #42

What item does Jim Young sell to buy his wife a Christmas present in O. Henry's The Gift of the Magi?

What was the world's first national park, a status signed into law by Ulysses S. Grant in 1872?

Which resident of the Hundred Acre Wood gets "unbounced" in Chapter 7 of The House at Pooh Corner?

What world-famous promotional items does the tire company Pirelli provide to 10,000 lucky clients every December?

In Hans Christian Andersen's "The Princess and the Pea," the old queen puts the pea under a stack of twenty what?

What's the "Kennection"?