–Went to Bel Air for ice cream, cream cheese, milk.
–Stopped at UPS for spinner buttons and Origin8 crankset.
–Turns out I can’t install the crankset at present–with my current bottom bracket, I needed a set where the axle is pinned to the crank. The current set doesn’t even have an axle. Much despair, until I found that there are BBs with a built-in square taper axle. I’m looking into one now; it might require me to measure the chainline to get the right one though.