A cute running cat animation on your browser taskbar. Based on https://github.com/Kyome22/RunCat_for_windows
Colour matches your desktop's theme and you can change between cat and parrot by clicking the icon.
Download the repository, either with git or with the the 'code' button at the top of the page -> Download ZIP then extract it.
Go to chrome://extensions, enable developer mode then click 'Load unpacked' and find the unzipped directory.
Go to about:debugging -> This Firefox -> Load Temporary Add-on
All credit for the animation goes to Kyome22, this was put together in about 30 minutes mostly based on their code