Whatever the word is for the cultural pathology that makes me want to replace every light switch in my house with something like this, I suffer from it. [Buster & Punch via Uncrate]
They sell the knobs separately, but at great expense. Alas, cheapo metal knurled knobs just don't look that nice. If I were to want industrial knobs on everything in my house, where might I find nice ones at a reasonable price?