Official Gear

Project Logo Gear:

Heliophysics: https://business.landsend.com/store/heliophysics/

Parker Solar Probe: https://business.landsend.com/store/parkersolarprobe/

Solar Orbiter: https://business.landsend.com/store/solar_orbiter

Johnson Space Center Logo Store: https://business.landsend.com/store/mod/

NASA Items:

https://officialnasagear.com/   (includes really nice rainbow NASA logo pins)

https://business.landsend.com/store/thenasastore/