I'm going to an intimate dinner party that's also a semi-official housewarming for a couple I'm close to and am a bit out to sea about what to bring. I was very close to the couple a few years ago (in fact, I was in their wedding a few months ago, but they just moved from cross-country, so I hadn't seen them for a while before that) but they are both people who go through many phases, so I'm not very clear on their current interests. I do know that they scarcely drink (and when they do they drink high-end wines and liquors), are very particular about what foods they eat (my friend follows a very strict diet and has told me that when she's given food she throws it away immediately), and my friend particularly dislikes flowers.
I asked if there was anything I could bring (wine for dinner, a non-alcoholic beverage, etc.) and she assured me that only my presence was required.
I would never dream of showing up to dinner -- let alone a housewarming! -- empty-handed but am plum out of ideas. I don't know their tastes well enough to feel comfortable giving them a decoration or homegood or such; I make significantly less money than they do so a gift card would be both tacky and a large sacrifice for me and not particularly useful for them; the traditional offerings of alcohol, food and flowers are totally off the table. Any help would be greatly appreciated!
The only idea I have so far is buying one of those $5 basil plants that you can get at the supermarket, because I figure basil is more useful than flowers, and it would be easy for them to re-gift if they want, or else to use in cooking whatever food they prefer.