Installed a vent into the desk with a high powered fan underneath.
Figured we joked about it enough, but this thing keeps my office snug & warm throughout winter without having to expend a single extra cent in heating.
Leave the door open and point (another) fan at it from outside for circulation. It helps that it's basement level. Stays nice & cool in the summer unless it's 30°C+ for weeks on end.
And yes, I'm an actual basement dweller. No, I don't live with my parents.