1. Fish tank pump taken out of water for a couple weeks wouldn't run when put back in. Inspection revealed an impeller motor humming but not running: i.e., getting power but likely held in place by corrosion. Being out of rubbing alcohol, we doused it in the solvent-grade vodka from under the sink and tried again; this immediately resolved the problem.
2. We lately ran out of dishwasher detergent and laundry detergent. I am annoyed with schlepping around various mixtures of water with unidentified foaming agents in them, and so decided to Google for the differences between ordinary dish liquid and these other things. It turns out that baking soda + (a wee bit of) dish liquid serves quite well in both the dishwasher and laundry roles.
3. As a bonus, this search yielded a recommendation for white vinegar as a fabric softener. Having put it in the fabric softener tub in the laundry machine and gotten out exceptionally soft and nice-smelling towels, I will testify that this, too, works nicely.
4. replace the dubious blue no-ingredients-listed Dawn we're using for dish liquid with something more soothing to the soul
5. figure out the monetary impact of substituting food-grade chemicals for household cleaners.