Former u/MrMagnesium on Reddit
Öffi, a non sucking public transportation app.
My systems have names of Jupiter’s moons. The main devices are named like the four Galilean moons.
I’m happy with my Epson ET-2820. It is a wireless inkjet printer, but it uses ink from bottles what is not that expensive. The printer hasn’t dried up, yet.
The device works with the generic CUPS “driverless” printer driver, so no configuration on Linux computers to print. Scanning worked out of the box, too with sane.
tl;dr: most flawless working printer I ever owned.
You can install KOReader on Android as well. Well it lacks OPs material Design requirement, but it fulfills the other.