For blender files and fluid simulations cache ;)

Samsung SSD 870 EVO - Disco duro interno de estado sólido, 2 TB, SATA 560 MB/s, 2,5", Negro - 2 TB - Samsung SSD

MOONBEEKI Cat Paw Cushion Chair Comfy Kawaii Shape Lazy Plush Pillow for Gamer Chair 28"x 24" Cozy Floor Cute Seat Kawaii for Girl Worker Gift, Dining Room Bedroom Decorate Black - Black - 28 Inch

My sister bought me one once and it broke T_T

To keep temp cables in reach. like for the wireless mouse, phone charger...

To strenghthen wrists for long working nights =^.^=