When I was pregnant, I obsessed over knitting with machine washable yarn for baby things. Babies are messy, I reasoned, and life is too short to hand wash pee and puke out of things frequently. I was not wrong.
As it turns out, though, I neglected to think of my own clothes. I thought I would go back to knitting the sweaters from my queue once I regained some semblance of non-preggo shape, but I didn't consider that most of the yarn I have lined up for said queue is not machine washable. And I find myself covered in bodily fluids that are not my own sometimes multiple times a day.
DUH! I hear you shout. Of course the baby's mess is not confined to his own clothes! And yet I totally didn't consider this before the baby arrived for some reason.
Cattails in some Rowan Creative Linen, which is a 50% cotton 50% linen blend. It's not advertised as machine washable, but washing and drying my swatch produced no ill effects, so I'm going with it. Bonus: lots of stockinette means that I can knit a few stitches and put it down without losing my place - necessary in these days of uncertain naps.