...To Jack in Sor-Tessera, would you please deliver a diaphanous, stylized moon, maybe something that fits in the palm of the hand of an average adult male? No craters...but instead include a scale-downed map groundwork map of Satellite somewhere on the backside.
It'll be pretty obvious who it is from, so the card shound simply read: "Remember what keeps us ebbing and flowing."
If it could glow, too...but nothing like a tacky green. Only white.