Speaking of minimalist kitchen torch devices… The Searzall Stainless Steel Torch attachment is about as minimalist as they come. It’s a stainless steel head that screws onto your propane blowtorch and breaks up the high-intensity flame into a more diffuse and useful (from a culinary standpoint) state. It features 2 layers of fine steel mesh that spread out the heat, along with an aluminum adapter and the other hardware you need to safely attach it to your propane blowtorch.
While this type of sous vide torch isn’t going to enjoy widespread appeal (primarily due to the lack of integrated safety features and, of course, the look) there will be those who find a lot to like in its ability to produce a high-quality sear, even on very uneven surfaces. That’s something that’s often hard to achieve with many more attractive and affordable kitchen torches.