Suramar Storage Crate

Do NOT bother crafting this. This is nearly identical to the Moon-Blessed Storage Crate that drops from Xavius in Darkheart Thicket. It is a 100% drop rate, even on Normal.

On a Lv80 retail character or a maxed out timerunner it only takes 2.5 minutes to run. You can just stay mounted and run straight to Xavius. You don't even have to dismount for the first boss, just wait until the shield drops then run around him. Ignore the second boss, and don't even go down the path to the third boss, just take the short path straight to Xavius. And at the end Malfurion will teleport you back to the entrance so you can immediately reset and run it again if you want more.
Avoid aggroing the first boss and try to avoid any trash before him that would link him if you pull it past him, as he sometimes teleports you either back to him or sometimes even to the entrance of the dungeon. Doesn't always happen but it's annoying when it does as you then have to dismount and kill everything to get past the barrier. Easier just to avoid it, or if you do aggro something before him just kill it quick and remount. After the first boss you don't have to worry and it doesn't matter if you aggro stuff.

Save your Fel-Touched Lumber and other materials. You can get 10 of these in 30min until you max out your dungeon resets, then an hour later you can run it some more. The ONLY reason to make this is if you truly need an extra +10 Housing XP.

Sadly I did not know this until after I had already crafted one myself. I had even leveled Legion Inscription for the same purpose, which was also not cheap. Oh well, it was still worth it to craft the Suramar Dresser, which has no alternative like this item.