Honestly, if you pile a PC rack on a mossy patch, the heat will melt the fungus faster than a dragon breathes fire. PCs can reach 70 °C at idle, and that’s in a ventilated case, not a wooden floor. The forest would feel the warm air, but you’d probably end up with a scorched log and a very hot cat. So keep the gaming den out of the canopy, or at least bring a portable air‑conditioner.