
On a more serious note, can't stand odd numbers for volume, air con, or anything like that. Though i'm in the process of getting myself a retro radio that I saw at the NEC with two dials, no odd numbers and no little "pointers" on the dial which would have to be vertical.
Have to have windows either up or down - there is no in between! However, sliding windows on the mk1 and 2 solves this problem nicely

Same with plugs, if I see one switched on (if there's nothing plugged in) i'll turn it off.
In our kitchen, we have two light units, which means we've got two switches - those have to be the same when both lights or on/off (so have to switch between each end of the room to sort this

Yeah, we're not perfect - but where's the fun in that?