If you want to really impress David you may need to find a way to put one of these in the box.
http://www.ebay.com/itm/VINTAGE-YAR...070?pt=LH_DefaultDomain_0&hash=item3f42175166
Some vintage Yardley would be an awesome addition as a sample only soap. I'm sure I wouldn't be the only one interested in trying that one either.