@jonah I unfortunately don't have accounts there, so:
Phone: OnePlus One running Ubuntu Touch (waiting for Pinephone)
Laptops: 2x Asus running Manjaro i3-gaps (next will be System 76)
USB Storage: Apricorn Aegis Secure Key 3Z and Aegis Padlock SSD
USB Authentication: Two unused Yubikeys, unused OnlyKey
Router: Custom 1u build running OPNsense (hardware option available)
Other: 10x Raspberry Pi's (2B/3B)
@jonah I used to use them just for password management at the time, which has now been replaced with Bitwarden and KeePassXC. I just had the Yubikeys storing a very large password at the time, and the OnlyKey was used to store multiple passwords.
@amdac unused?