Permanent one working with a different model. Like 1 pixel per hour with a fixed drop rate (instead of this “stay and place as fast as you can for best performance”), and you can hold like 36 pixels. So basically you drop a few dozen pixels daily then you're done. After every 100,000 clicks, you move the window 100 pixels to the right, making the leftmost 100 pixels locked forever creating a slowly growing endless immutable banner.