Mike,
I don't have the box but I do have some threaders - use them to keep my moser seemless rings on and have used them for smaller flies - handy for patterns with a bit 'going on' around the eye.
Ensure that you match a suitable leader diameter to the fly as if you try too thick a tippet it can be difficult at best to pull it and the wire through the eye.
Nice present though...................................also if things are that bad then what about an Orvis box with the blue and yellow leader winder type things? I use mine when tubing as I hate tying a 3 fly leader when in the ring, might be an option.
either way nice idea
Iain