Although Lynn told me to not read into her lock and key theme, she did mention that sometimes she wishes she could lock her door and close her blinds at work to block distractions. I couldn't agree more, especially now that I am trying to catch up from my time in the States.
Her card also mentions a visit to a tea house serving 'flowering tea' - a dried flower that blooms as it steeps in boiling water. I have a feeling this is not an extreme rarity, but I have not seen it before so I immediately googled it and came up with this.
Seems like a perfect drink to have when you are locked your office catching up from a holiday - or preparing for one!