Plentiful Perplexing Puzzles

Update for 11.1
2 ways to do this, both with The Dread Pit delve(Ringing Deeps)
The solve to pipe-filled-chest is always 1 move at the bottom-right.

1) Rescuing Kobolds scenario(scenario type matters)

Rescue Luch and Skurro, get thrown across the chasm.
There are 2 potential spawn points for pipe-filled-chest, one immediately on your left as you land, and one to the right, down the ramp in the stalactite cave. (Can use stealth class to skip the trash on the ramp)
~80% chance 1 of these 2 spawn points will be available.

You can spot both spawn points from where you landed.
After doing the puzzle, right click character, leave the delve and reenter.

2) Smashing Skardyn scenario

There's a spawn point for the puzzle immediately to the left-ahead upon entering the delve, inside a pack of mobs. (You can spot it from the entrance)
Take the Skardyn lure from NPC and do the pack if the puzzle is active.
If it's not active, just leave the delve and reenter.

------------------------------------------------------------------------------------------------------------------
Did this with The Dread Pit (in the Ringing Deeps).

There's a spawn point for Wrapped Spool immediately to the left-ahead upon entering the delve. (You can spot it from the entrance)

If it's not active, just leave the delve and reenter.

Easiest way to do this is Tak-Rethan Abyss, doesn't matter which version of it. Start by just rushing down the first hallway and once you are in main cave look to the left and see if the puzzle is there, if it isn't just go right, the other 2 locations can be seen once you turn right. The puzzles can be solved in 2 moves.

Accomplished this today in Dread Pit Delve, located on the eastern side of Ringing Deeps. The story was Darkfuse Disruption, and the teleporter it had helped a ton. The 3 locations for the Wrapped Spools are visible from the entrance (or by process of elimination). The First is immediately across the chasm between the two vertical rock formations, the Second is across the chasm but up and to the left by the exit (drag your mouse along the ground of the ledge, and your mouse cogwheel should pop up if it's there). The last location, you can just hang a right, go up the ramp, and once you get to the top of the plateau, you should see the wrapped spool on your left.

I hope this helps you on your journey. Queue up a good video and relax. This is a lengthy process, but nothing too crazy.