Disclosure: This page contains affiliate links. If you make a purchase through them, I may earn a small commission — at no extra cost to you. Thanks for supporting the adventure!
Gear

überleben Kräftig Ferro Rod
CampingI personally love having a ferro rod for camping. There is a slight learning curve to it, but it lasts virtually forever. Take this with some torn up paper towels mixed with some candle wax and it is so easy to start fires with this thing. It doesn't go bad. It can get wet, and you can just dry it off and it's good to go. They don't take up a lot of space. I even like lighting my camp stoves with one. Out of all the ferro rods I've used this one is awesome, it throws the most sparks and it is a very simple and basic design. This is great for camping, backpacking and emergency scenarios.

Metolius Steel Auto Lock Carabiner
CanyoneeringIn most cases, you want carabiners that are as light as possible. The exception is when rappelling, where your carabiner has to withstand heavy friction. For that scenario, this is an excellent choice. I recently used the screw-lock version and it worked well, but I recommend the auto-lock option instead. An auto-lock reduces the chance of forgetting to secure your carabiner right before starting a rappel, adding an extra layer of safety.

Sterling Rope ATS Device
CanyoneeringThe ATS is a versatile rappel device designed for climbers and canyoneers who want more control than a standard ATC. Unlike a basic tube device, the ATS lets you adjust friction. You can flip between the concave and convex sides for more or less resistance, or wrap the rope around one of the horns for maximum friction. The horns also allow for a quick tie-off if you need to stop mid-descent and go hands-free to manage gear or solve a problem. I recently used the ATS while descending Bluejohn Canyon, and it performed well, although it did sustain more wear than expected. The ropes we used were older and dirty which does add to wear on rappel devices. I highly recommend pairing it with a steel carabiner — the steel stands up to friction much better than aluminum and takes on a significant portion of the wear. If you want a rappel device that gives you options in tough canyoneering conditions, the ATS is a great choice.