So I was wandering around getting my house violated by Creepers as usual.
I decided to have a little fun and venture out to our NPC Village.
After getting lost, I discovered a desert. Unbeknownst to me, I was being followed by a Creeper through the desert. About halfway through, I found a spider surface dungeon completely enclosed in sand. I was warned of the Creeper's presence by it getting damaged on a cactus. It escaped and shortly after I was blown up.
I lost a grand total of
1 Iron Sword
1 Iron Chestplate
1 Iron Leggings
Not a big deal, but my caves are more polluted with coal than iron.