Here the first for you, travelling photo retouchers!

https://www.tourboxtech.com/

It's interesting bit eye watering expensive for a fairly simple peripheral. I've been toying with using a left handed gaming keyboard which are available used fairly often.

Very neat !

I was interested in a loupedeck but the eye watering price pushed me to go open source on this one. I bought a MIDI controller and used Midi2LR to program it! works very neatly :)

PetaPixel

Going Open Source to Make Your Own Loupedeck Alternative

There is an extremely talented landscape photographer called Thomas Heaton whose YouTube videos I find very instructive and entertaining. Recently he

I have this Behringer controller and used midi2LR a fair bit but wasn't quite satisfied with this solution. First you have to spend quite a fair bit of time setting it up, then building the muscle memory. Then I could never be fully reliant on it and had to switch back and forth with the mouse and keyboard. The hand(s) have to move a bit too much around. And finally there was quite a noticeable lag between the moment the wheels are turned and the sliders are changed.

Look story short, I ended up buying LrSuperKeys (https://www.lrsuperkeys.com/), which is an LR add-on, not an external device, and this has been AMAZING.

The way I use it: in LR, in the develop module, I now long press on a key and then either use the scrollwheel or click+move the mouse to adjust the sliders. So I'd press 1 to change the temperature, 2 for the tint, 3 for saturation, 4 for vibrance, Q for exposure, W for contrast, ASDF for highlights/whites/shadows/blacks, ZXCV for tone curve control, etc, 6/7/8/9/F5/F6/F7/F8/F9 to control red/orange/yellow/.../magenta (and depending on where the mouse is on the screen, it changes the hue, saturation or luminance), etc. Keys and shortcuts can all be configured.

This has massively improved my editing workflow, the learning curve is minimal, there's no need for an external device, and... it's very fun to use.