Hacking The ultimate list of mods to enter RCM

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It's required to short pin 10 (the lowest pin of the right joy con rail) to the ground in order to enter RCM. Ground can be found at pin 1 or 7 of the joy con rail, at the middle screw of the joy con rail or at the fan at the top of the switch.
Currently I think that the best ways are to either use a paperclip or a 3D printed piece (from thingiverse) and a paper clip.
You can also use these as inspiration and try to find another way that works best for you. An idea would be to stack cardboard and draw a conductive trace with a pencil on it, labo style

No soldering/ teardown/ 3D printer required

Spoiler: Use a cable

Use a cable to bridge the connection between the 10th pin and a GROUND. It's the easiest to use the GND of the middle screw in the joy con rail or at the fan.
Demonstration: https://gbatemp.net/threads/can-som...g-apart-the-joycon.501933/page-7#post-7934863
You can also hot glue a jumper cable to touch specific pins: https://gbatemp.net/threads/can-som...-apart-the-joycon.501933/page-11#post-7935469
Or bend a cable (but make sure not to touch any other contacts): https://gameparadise.org/tutorials/diy-joycon-pin-jumper-free-to-1€.108/
Or use the pins from a SATA power cable: https://gameparadise.org/tutorials/my-sata-power-cable-rcm-jig.109/
Or bend alu foil (but make sure that it only touches pins 9 and 10, not 4!):


Pros:
-No hardmod required
-Very cheap

Cons:
-Not permanent
-Might take a few tries to get good contact at the joy con pins

Spoiler: Use a paperclip

Bend a paperclip to make contact between pin 1 and pin 10.
Demonstration: https://gameparadise.org/threads/paperclip-rcm-jig.811/#post-819

Pros:
-No hardmod required
-Very cheap

Cons:
-May have to rebend the paperclip

Spoiler: Use screwdrivers

You can use two screwdrivers to touch the first and the last pin. Make sure not to touch any other pin!
Demonstration: https://gbatemp.net/threads/can-som...-apart-the-joycon.501933/page-10#post-7935356
It can even be done with one screwdriver by shorting pin 9 and 10: https://gbatemp.net/threads/the-ultimate-list-of-mods-to-enter-rcm.502145/#post-7939355

Pros:
-No hardmod required

Cons:
-Requires two screwdrivers
-may not be very relieable (depending on the size of the screwdrivers etc)

Spoiler: AutoRCM

Taken from briccmii: "Corrupts the first byte of every BCT's pubkey in BOOT0 so your Nintendo Switch always enters RCM mode".
You need another JIG at least one time to install AutoRCM.
There are two implementations:
briccmii: https://switchtools.sshnuke.net/
ipl: https://github.com/Reisyukaku/hekate/blob/master/ipl.bin?raw=true

Spoiler: reboot_to_rcm (software)

Refer to https://github.com/pixel-stuck/reboot_to_rcm for a guide

Pros:
-Very relieable
-No hardware required

Cons:
-Only for switch consoles with 1.0.0

3D printer required. No soldering/ teardown required

Spoiler: f0f's 3D model

3D print the model and follow the guide: https://github.com/fail0verflow/shofel2/tree/master/rcm-jig
Demonstration:

Pros:
-Pretty relieable
-No hardmod required

Cons:
-Requires 3D printer + MicroUSB cable

Spoiler: thingiverse's 3D model

3D print the model and stick a paperclip into it. 3D model: https://www.thingiverse.com/thing:2877484

Pros:
-More relieable then paperclip method
-No hardmod required

Cons:
-Required 3D printer + paperclip

Teardown required. No soldering/ 3d printer required

Spoiler: Bend contacts of joy con

Screw the joy con apart and bend contact 9 in the rail of the joy con to contact 10.
Demonstration:

Pros:
-Cheapest way
-pretty relieable (if done limited times)

Cons:
-Contact will bend itself back after a few uses
-Contact 9 might break if done too often

Teardown and soldering required. No 3d printer required

Spoiler: solder to joy con contacts

Another way is to take the joy con apart and solder to the joy con contacts. You can solder a button/switch between the contacts to be able to disable the mod.
Demonstration: https://gbatemp.net/threads/can-som...-apart-the-joycon.501933/page-10#post-7935275
It might be prettier to solder to the test points and not to the connectors of the rail: https://gbatemp.net/threads/tutorial-how-to-test-fusee-gelee.501846/ (see the image)
A really elegant solution is to solder a reed switch into the joy con, you can use a magnet to trigger rcm (magnethax 2.0 confirmed?): https://gbatemp.net/threads/the-ultimate-list-of-mods-to-enter-rcm.502145/page-4#post-7944986

Pros:
-Very relieable
-Cannot be seen from the outside

Cons:
-Requires soldering

Spoiler: solder to switch joy con rail contacts

Another option to solder to are the switch joy con rails: https://gbatemp.net/threads/the-ultimate-list-of-mods-to-enter-rcm.502145/#post-7939246
You can also solder to the joy con PIN 10 and put the GND at one of the spots known for it: https://gbatemp.net/threads/the-ultimate-list-of-mods-to-enter-rcm.502145/page-2#post-7940243

Pros:
-"included" into the console

Cons:
-Not much space
-Requires soldering & unscrewing a part of the switch