During weeks, take 2-4 hours off to learn some new skills or work on stuff just for fun. Want to learn 3D? Create a space for yourself and do that. Want to design physical posters? Take out that brush set. Doesn’t have to digital design stuff - could be anything off-screen too.

Inform your team and project lead about your schedule and have fun. Only requirement - you have to share your updates in the brag hours.