Here you can see the decal that reads "A WIZARD IS NEVER LATE". This was a vital part of the vignette.
What's this you say? This is a little LEGO "key" that fits into a slot on the vignette. The only hint given is the little slip of paper on the side.
Here is the "keyhole". Devilishly hidden, but still in plain sight.
When you push the key into the keyhole all the way, something is revealed.
A hidden drawer! And on this drawer reads the second part of Gandalf's phrase: "NOR IS HE EARLY".
The drawer space has a volume of 6X4X1.3 studs. Included in the drawer is a secret note for the friend.
A final zoomed out shot. I hope you liked it!.