From my view, David...a bespoke jacket would be one in which the "commissioner" has his say in any and every aspect of the design (ie. he gets to choose the buttons, cuff style, pocket style, buttons, etc) and that the jacket is a one of a kind piece made specifically to the measurements of the commissioner. This varies from made to measure cases where you are ordering a standard style jacket (with perhaps some choices in cuff style and number of front buttons) made to some fairly common pattern sizes.

As far as kilts go...any kilt that is made to your measurement and from your chosen fabric would qualify as "Bespoke" in my book.

Bonnets, etc are a hard sell in the "bespoke" realm...styles are fairly standard. You may choose a color and have some say in the size of the crown, etc...but I'm not sure I'd classify that as bespoke.