I think for me it would be invisibility or living eternally! With invisibility you could basically go anywhere and not be seen, you could observe anything you wanted to unnoticed. think of the historical moments you could attend, and if you could live forever, you'd have enough time to save up to build that top-end AMD PC you've always wanted to build haha
Ryzen 7800X3D - Radeon 7900XT - MSI Tomahawk X670e MB - 64gb 6000mhz G-Skill Neo - Noctua NH D15 - Seasonic Focus V3 GX-1000W PSU - 4TB Samsung Gen. 5 NVMe - Fractal Torrent Case - ROG PG48UQ OLED
