Minecraft wiki entry for SkyWars, associated text: Water bucket
Lava bucket
Diamond pickaxe
Diamond axe
Splash potion of Regeneration (0:40)
Splash potion of Speed (around a minute)
Potion of Fire Resistance (3 minutes)
Bow enchanted with Power I or Power III, 15 arrows (if the bow is Power I) or 20 arrows, if it's a Power III
Fishing rod
Eggs or snowballs