Wanna know something better than the Chest Run? How about infinite bloom + chests.

Head to the Ishtar Commons. There are 2 chests that can spawn on the bottom floor of the building you exit out of, one is at the rear, the other can be at the door. On the other side of the commons, leading to the "N/Gen Branch", there can be a chest to the left in an elevator opening thing, and 3 possible locations on the right in the lab rooms and elevator. (there are also other spots in the area that can have chests too, but they aren't used in the trick).

Here's the trick though, if there is a chest in any of these spots, you can grab it, and have time to run to either the "Hall of Whispers" or the "N/Gen Branch" load points, depending on which side of the area it is. You can then run right back, and a respawn of the chest in the same spot will be there for you to open again. You can continue doing this, opening chest after chest after chest. It's the same trick as the recently popular "Rocketyard Chest Farm" video that was trending. (I got bored of doing the Rocketyard and went looking for other possible places)

You can also pick up a spirit bloom each time as well if you feel like it, just pick it up before the chest each time (though the chests give you a tonne of spirit bloom anyways, so I don't think it's worth it).

I've had some pretty good runs doing this, even got myself an Ascendant Shard out of one of the chests. The only thing you have to worry about is people being put in your instance, as they will screw up your respawn chain usually.