I was bored earlier and looking at custom aquariums (I am a fish geek in dire need of actual fish), and found myself on the Living Color Aquariums site. They're the people that do the national geographic show "fishtank kings"
So there I am looking at the pretty tanks, when I click on their cabinetry division to discover they also, for who knows what reason, make tack boxes.
I can't afford to live on just a singular income, offering only one service....so I offer multiples until I CAN afford to (become popular enough) to slide by just offering one thing. Whether that's in reference to my horse business - I can't JUST do lessons, I also board, do camps, leasing, drill team, etc. For my sewing business, I make more than just hats - I make different types of upcycled unique clothing, stuffed animals, ornaments, bags, and more. Maybe one day I'll be able to do just one thing, but I totally get the crossover thing.