HN user
For semi-structured cards, try kanbantool.com - it does not require you to follow kanban method, allows for great customization of cards, and even has an extensive SDK (https://kanbantool.com/developer/sdk) which you can use to easily tinker with the board.
A good self-hosted alternative is https://kanbantool.com/kanban-tool-on-site - it launched back in 2009, has time tracking and allows for a lot of customization through SDK.
* Home Automation, like opening shutters at sunrise and closing them at sunset or turning on LED lights at night when movement is detected and turning them off after a certain amount of time since the last movement. Z-wave relay modules control most devices, and the command-center is Raspberry Pi + Aeon Z-Stick (aeotec.com/z-wave-usb-stick/), which allows for a vast amount of flexibility compared to standard Z-Wave controllers.
* an extensive collection of custom made /usr/local/bin scripts which automate things such as video recording and encoding for youtube (recordmydesktop + avconv), backups, and certain time-taking and repetitive operations on websites (like downloading invoices; through selenium-webdriver - github.com/SeleniumHQ/selenium/wiki/Ruby-Bindings)
* zaps on zapier.com for pushing data between multiple cloud services that would otherwise have to be moved by hand (i.e., Gmail email with matching subject to a task in kanbantool.com)
* autokey on Ubuntu, which allows me to type phrases like "!thx" and have them automatically expanded to i.e., "Thank you for your email!"