Carpet Power Stretcher
Unless you built your home from scratch, you most likely never had to choose a type of carpet for your home. Installing carpeting is a job that even the handiest DIY-er can’t manage on their own. It requires a set of highly specific tools that you wouldn’t use ever again.
One example of a super-niche tool is this carpet power stretcher. It’s a wooden plant with carpeting on its surface. This tool stretches carpets so they reach one wall to the other without folds. You can see how they’re used on YouTube, but it’s not a very interesting process.