Due to FANDOM's recent take down of the SnowStorm script and the "UTC clock" script before it as well, I've tried searching for ways to counter such decisions and reinstall these scripts into our wiki without violating their polices. And by luck, I found two methods to achieve this goal; the Gadgets Extension and the CodeLoader script.
Both methods give users the ability to enable/disable a list of CSS and JS scripts for themselves from a user preferences page. So, instead of running scripts like the SnowStorm one automatically on the wiki which now violates FANDOM's customization policy, you now have the freedom to choose from the said page whether to run the script or not. However, the CodeLoader script has more bonuses in that it gives admins the ability to provide settings for some scripts to users, so that's why I preferred it to the Gadget extension and installed it to serve scripts to users instead.
From the page below, you can see a list of scripts that you can enable and customize for yourself. The settings you apply to some of these scripts are applied to your account only, and other user will not be affected by it. You can reach this page easily from the "Script preferences" link located on the "My tools" menu in the Wikia toolbar. For Monobook users, you can see the link located on your Toolbox.
By using this method, we make sure that users of the wiki are the ones who want these scripts, and that we are not forcing scripts on users. We can also customize some parts of the wiki which should not be customized through this script (like the header), and give users the freedom to use them or not. Making this method like your personal.css/.js page that any script can be imported on.