"The giant spiders are a no-no though "
What's wrong with a nice big "Harry the Huntsman" spider! We have Huntsman's in the house all the time, friendly things and they catch other insects and stuff you don't want in the house. Years ago we had a noisy cicada up in the rafters that was driving us batty (no pun) with it's racket. Some time later I went to turn off the kitchen lights and there was Harry the Huntsman sitting on the light switch and waving the dead cicada at me as though to say "I caught it for you!"
Snakes though, thats another matter. Not real fussed about them at all. Pythons are generally ok, but there's way too many that are pretty serious matters if they bite.
Hal55