Arrow was headed towards the front door of his house having just finished setting up something special for Addie when she got there.

He wasn't really sure if she would appreciate something like what he was doing because he had very little experience with getting someone else something for Christmas.  He'd never done it before so he just did what came into his head and hoped that Addie would like it.

Earlier that day he had been all through the place getting it all spruced up for Christmas.  Arrow wanted it decorated nicely but didn't want it to look overdone.  As he put the last piece in place for Addie on the outside of the door he whistled for his owl and upon attaching the note to his leg he promptly apparated back to his flat.

The note he sent with the owl said:

Dear Addie
I have a surprise for you at my house please come over soon.  I won't be there when you get there so just let yourself in.
Arrow.

The note he left on the door said:

For our first Christmas together I'll be quite honest.  I have no idea what I'm doing.

I have left you clues so you can find all your presents in the house.  You'll especially like the big one at the end.

Your first clue:  When you open the door find the sound of music.

She had been a madwoman shopping at the last minutes of Christmas. A madwoman trying to shop in not only Muggle London (an awful idea and unnecessary evil, one that she would not be repeating, Addie had determined) but also in Hogsmeade, Diagon Alley. Addie had made it home and currently was utilizing wandwork and sipping cocoa while Christmas records played in the background.

A few of Arrow's gifts were in wrapping process when the tapping of one window got Marmy barking animatedly, causing Addie to go off to the window. Opening the window, she ushered the owl in, giving it a few owl pellets and water before it was allowed to fly back to Arrow's place, soon reading the note.

Marmy gave a bark and whine, making Addie to eye the pet in an instant. "You're fine, you brat. Now. I'm sorry but I've got to go to Arrow's and no, girlie, you shan't be going with me," Addie remarked, flicking her wand to finish the gifts she currently had wrapping to finish before moving them and the others to the bedroom, into the closet. Marmy followed up until she realised that her owner had no plans for her to wreck the gifts. "If he wants you ta come, we'll come back and get you, I promise, love," Addie reassured, squatting down to rub the crup mix's ears before rising to her feet a moment later. "So long, fare thee well, pip pip cheerio -- I'll be back soon," she sang before apparating.

SNAP!

Addie headed to the front door, his owl message in hand, reading thereafter Arrow's next message. The sound of music, eh? Julie Andrews or....? A chuckle as she heard the music in the background, following its enchanting melody soon enough until she arrived to the next clue....

Arrow was sitting in his flat wondering if Addie had gotten to his house yet.

He wasn't sure if what he had set up was what someone would do for a Christmas.  He'd never really had anyone to spend it with other than family. 

He smiled to himself as he thought of the first gift he'd left for Addie and the next clue.

On the piano he had set a bright red gift bag with green and white tissue paper in it.  Inside the bag was something that normally wouldn't be considered a Christmas gift but it would fit in with the big gift at the end of her little scavenger hunt.

It was simply a spoon.  A golden spoon.

Inside the bag was also her next clue.

Your next gift will be near the scent of a freshly baked pie.

Of course he hadn't baked a pie but he had bought one and heated it up enough so that it's scent would flow through the house.