Have you ever wanted to replace the useless dollar sign in your bash prompt with a
random kanji? No? Oh well, I'll show you how to do it anyways.

Open your .bashrc, and find this section:

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi

The PS1 variable decides what your prompt will look like, so change it into
this:

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$(eval "shuf -n 1 ~/misc/joyo-kanji.txt") '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w$(eval "shuf -n 1 ~/misc/joyo-kanji.txt") '
fi

The only part left is to fill the file ~/misc/joyo-kanji.txt with a list of
kanji. One on each line. Download jojo-kanji.txt here..