Speaking of nails, I did manage to drive one nail sufficiently crookedly that it missed the board and shot out the side of the case. It took me maybe twenty minutes to get enough purchase on the nail to draw it out without doing further damage. The overall harm to the piece is minor and probably wouldn't be noticed unless you were looking for it.
So, after one day of assembly, we have the following complete:
Two LEKSVIK bedside tables.
One BILLY 31 x 79-inch bookshelf
Two BILLY 16 x 79-inch bookshelves
Still to come:
A chest of drawers that will let me scrap an old one with a broken door with which I've been living for more than ten years. We have the pieces, but probably won't have time to assemble it until this weekend, as we are busy the rest of this week.
A pair (left and right) facing GALLANT work desks (T-leg option). These await delivery because they're too large to fit into my van unless I were to wrestle the seats out of it, and we're willing to pay the delivery charges instead.
These are the desks that I used their office-planner software to arrange and calculate that they'll fit, but with only about an inch to spare. In fact, we may be better off disassembling the office, pulling the computer equipment and other stuff out the room, then assembling the desks in this room, rather than in the living room, because otherwise we'll have to get the desks from the living room to the work room, which could get tricky.