Was looking for a mod that let me teleport without delay and was 1 handed. This was the easiest to make into that since the mods Handheld Teleporter had a delay, and Ship Teleporter Relay doesn't work underground.

For anyone who wants to do the same, here's how I did it. Its pretty easy.
You'll need PAKit, a .pak extractor. This also requires a quick and easy edit to a .lua file. Then, making it 1 handed can be done with a provided /spawnitem command, or using RexmeK Item Editor ingame.


To swap Left Click to Teleport and Right Click to Tech Menu:

open PAKit, and go to the steam Workshop folder for this mod.
Should be one of these paths:
E:\Program Files\Steam\steamapps\workshop\content\211820\951476104
or
E:\Program Files (x86)\Steam\steamapps\workshop\content\211820\951476104

211820 is Starbound's ID
951476104 is the Mod ID

Unpack the contents.pak file to the same folder (951476104)

In that folder, open the Items folder and you'll see portableconsole.lua. Copy this file and paste it in the folder, in case of a screw-up. Open the original portableconsole.lua.

The second line says
Change "primary" to "alt".

The fourth line says
Change "alt" to "primary".


For a 1 handed version:

Do all the above, otherwise you will have a 1 handed Tech Menu.

Load into Starbound.

In chat, type
now, put your cursor near your character, and in chat enter (or copy/paste) this
(sorry it's so long, it's just how the item works.)

No, you can not use something simple, like
/spawnitem fossilbrushbeginner 1 '{"description": "Teleport from anywhere.","shortdescription": "Portable Teleporter","twoHanded": false}'
The way the item is set up, it is re-defining attributes of the Basic Fossil Brush. It's weird, but it works, so whatever.

The first code should spawn you a 1 handed version of this mod. The name and description also only mention Teleportation, not Tech.

Alternatively, if you have the RexmeK item editor, first get the item.
Go to the teleshop to get it, you can use /admin to get it free.
Open it in RexmeK, Click the +, and write
and click save. In the Save Parameter thing that pops up, write
Make sure all is lower-case except the H.
Click Save, the Save Parameter window will close, but the screen where you wrote "false" might not. That's fine, just close it. Now save the item and it will add to inventory.