The industrial sector is simple behemothic, covering everything from construction to electrical equipment, aerospace to waste management. There’s simply no way for us to comprehensively list out everything that could be be covered in this Spark. So we didn’t. Instead, we’ve picked a handful of thought-starting symbols to get your brain going. Have a look around to kickstart your inspiration, and remember: just because we’ve built a list, doesn’t mean you should build a portfolio out of what’s on it.