Because knitting isn't weird enough.
Recently I've become interested in making soap. A few years ago I found a book in a used book store and idly picked it up. I read through it, but most of the soaps were made with tallow, and I'm a vegetarian so I wasn't quite interested in making them. I certainly would want to put the little bunny logo on my soaps that indicate that no animals were harmed in the manufacturing of my product.
And then I discovered one of the recipes was for a pure olive oil Castilian soap. And I decided that I had to make my own soap. Because I love olive oil soap. Years ago, I used to buy a large square bar of olive oil soap from France. It was huge, and I could barely hold it in my hand. A single bar lasted several months, and I used it for everything: washing my self, my hair, as shaving cream. Sure, it makes you smell like a salad, but it's so good for your skin.
There are several items I need to buy: an accurate scale that can be reset to zero; dishwasher-safe buckets and pitchers; spoons that won't dissolve when stirring lye mixtures; safety goggles and rubber gloves; a large plastic mold for the initial pouring; a kitchen where I can do all this, because with the piles of mail my roommate keeps on our kitchen table, I'll never be able to do this work at home. And I want to try my hand at milling the soap, grating it down after it's been made, to create a hand-milled soap, where I can add things like ground up lilacs, or a bit of vanilla fragrance. At this rate, I'll be wanting to make my own bread (in the oven, not in a bread maker), and keeping chickens out back for the fresh eggs.
What has any of this to do with knitting? Well, absolutely nothing. It's just a bee I've got in my bonnet. But if I made my own soaps, I'd have the perfect excuse to knit up a bunch of wash cloths to give to friends along with a bar of home-made soap, with various logos like Daleks, or bears, or fleurs-de-lys knit into them to delight the recipients. I've got a lot of cotton yarn in my stash! I've seen the patterns on Ravelry! I could wrap the soap in the wash cloth that I'd knit!