While putting one of my OSIRIS-REx stamps on the envelope with my electric bill payment (my power company is a [no longer very rural] rural electric coop that charges $3 to process each online payment, and a stamp is still cheaper than that), it occurred to me that in the Project Hail Mary universe, there absolutely would've been stamps issued to commemorate the mission, likely from a whole bunch of countries. I'll be there were philatelists who took pride in getting a full collection of them.
Might've been a second wave of PHM stamps once the Beetles came back, too, and having a complete set of both would be seen as Very Cool in certain circles.















