The thing most missed is the feeling of wind. It can get a bit… stuffy down here,” Bob finally finished. “The animals are mainly for background noise; we have had a few days where my people can’t seem to take the silence. They tend to tear their ears open when it lasts too long.” <You… want insects and rodents? I didn’t bother because I never saw a use for them. Sure. I’ll make bugs and various non-threatening creatures on every floor and instruct the Mobs not to eat them. The breeze might take a while, but I know I can do it. Maybe an updraft generated by heat from my digging…>