Minecraft wiki entry for Nether_survival, associated text: As a last resort, if the player has (or can make) a chest or two (they appear in nether fortresses, so you might be able to locate one), the player can stuff all their equipment into the chests (not forgetting armor), and then commit suicide. However, you lose your XP levels if you do this. Assuming the player is not playing on hardcore and has not used a respawn anchor, they respawn in the Overworld, and can re-equip themselves at leisure (this time, not forgetting the flint and steel) before going back through the portal to collect their items. Note that this is more difficult on a multiplayer server because another player can come by and steal your items. If you have previously brought blaze rods back to the Overworld, you might even be able to use an ender chest, which can let you stash your stuff and pick it up back home from another such chest.