The Linux kernel

The GNU project

Parabola GNU plus Linux-Libre

The suckless philosophy

The dwm window manager

dmenu

The st terminal emulator

qutebrowser

IRC - it works everywhere, has numerous clients (my favorite happens to be irssi) and is open

Anime and Manga (including stickers)

Static websites with minimal (preferably no) scripts

Japanese music (blanket statement, see here)

The C language