Jan 7 2021: This tool tray clamps to the round diagonal support rods. It can be slid up and down as needed for optimal convenience. There's a bit of play between the tray and the brace collar to get the tray level.
If you don't use support rods yet there's a kit on Amazon; they really help for tall print quality.
Jan 9: Uploaded Tray_05R and Tray_05L so there's a choice for which side to mount it.
Jan 10: Refined trays a bit and added holes for spare nozzles.
-Uploaded Tray_07R and Tray_07L
Jan 11: I was not happy with the first clamps I made. The new versions use two M4 bolts instead of one and there are recesses for nuts.
-Uploaded Tray_Mount_03 and Tube_Bracket_02
Jan 27: Decided I hate the way the nippers hang off the end so I redesigned the tray and the hangar:
-Uploaded Tray_08R
-Uploaded Nippers_Holder_01
Jan 28:
-Uploaded Tray_08L
-Deleted two earlier versions

Creality

CR-10S

No

No

0.2mm

100%

There will be right and left versions of the tray depending on which side of the printer you want to mount it.
I've provided pilot holes which can be drilled out to fit different size hex keys
All threads are to be tapped M4
Use one: M4 flat head screw to connect Tray_Mount_02 to Tray
Use two: M4 x 10 to connect the two halves together.