I think the only "mount" I could get onboard with would be a grasshopper. Jumping + gliding would be very useful for getting around. Maybe use a ladybug as a beast of burden. Beyond that, keep everything else- especially the Wolf Spiders- wild. I had a surreal experience escaping from one at night near the Stink Bug Puddle. It felt like I was running into a Tyrannosaurus in a primordial forest. Massive, powerful, primal, and terrifying. I don't want to lose that by thinking "Ah yes, this thing is going to be my pet," but I wouldn't mind having a more convenient means of getting from Point A to Point B.