Question Want to fill some empty space in Corsair Crystal 570x

Mar 2, 2019
Hey all, new member here. I wanted to get some feedback on filling some empty space in the front of my case. As you can see in the photo, I have a lot of empty space below my radiator that seems kind of wasted. I have considered getting an AIO with a larger radiator to kind of balance it out but I can't justify spending the money if my CPU temps are not of concern (I have a locked CPU so overclocking is non-existent). I am leaning toward some sort of aesthetic addition at this point, but I am open to functional additions as well. My area has a sort of space theme and I've included specs below for reference if there are functional suggestions.

Thank you!

Case: Corsair Crystal 570x
Mobo: Asus Maximus IX Code
CPU: Intel i7-7700
Graphics Card: EVGA GeForce GTX 1070
CPU Cooler: Corsair H80i v2
RAM: 32GB Corsair Dominator Platinum 3000MHz
PSU: Corsair CX650M
Storage: 240GB SSD (boot drive), 1TB SSD, 1TB HDD
Corsair Lighting Node Pro Installed