Awesome

taskwarrior-polybar

merely a script showing the most urgent task and allowing it to be marked done

Place task_polybar.sh in your $XDG_CONFIG_HOME/polybar folder and add the following module to your config file:

[module/taskwarrior]
interval = 30
type = custom/script
exec = $XDG_CONFIG_HOME/polybar/task_polybar.sh
format = <label>
format-foreground = #FFF
format-prefix = " "
click-left = task "$((`cat /tmp/tw_polybar_id`))" done

The font here used for special characters is Wuncon Siji.