A good while back I found an interesting method of finding a lot more Spider Jockeys than one usually would.
Not many, to be honest, but it does have great bragging rights when you have 15 as opposed to your friends' 2.
Of course the original was built before experience existed in our game, but now this makes a much less boring and more explosive- and ore-proof way to gain XP than standing in a dungeon/spawner or beating up pretty rocks...both of which I personally hate.
Enough beating around the bush, you're probably wondering how to make a device that spawns Spider Jockeys.
Well, you can't, but what I found increases the odds of finding one to about 1 per night--That's a lot compared to regular hunting,even on Flatlands.
Instructions and such:
Pros and cons:
The finished product:
--I am not responsible for any gravity- or arachnid-based deaths you receive.--