Tarot of Trees by Dana Driscoll is the Knight of Cups.
As in the rest of these cards, this archetype is personified in a tree. When I first heard about this deck I did wonder how much I would connect with "people cards" who aren't people :) I found it somewhat challenging in the Wildwood, too, where each Court card is a different member of the animal kingdom. However, overall I find the Tarot of Trees Courts quite evocative. Perhaps least so, though, with this Knight of Cups, or at least so I thought until I began to ponder him for this blog!
His branches wave back a bit like Hugh Grant's floppy hair, giving me a feeling of someone who sees himself as romantic when actually he may be more narcissistic. On the other hand, I could see the branches as cradling his cup tenderly, holding it close to his heart(wood). On the third hand (I'm clearly having a Kali day), there is no apparent reason for his branches to droop so - is he just a wimp, easily pushed about by circumstances or others?
And so perhaps this is quite a good depiction of the Knight of Cups. Despite not being a person, his posture lends itself to a number of variations - I imagine others will see other things in him, too!
I am grateful for the times I feel tenderly held.