just a suggestion that *small* ornaments (fleurons, etc) can be generated as font glyphs
Create a SVG image, and import into a font editor which is capable of such things ---such as Type 3.2 from CR8 Software Solutions --- Convert to glyph, and add that glyph to an embedded font.
(PS-- you can also copy glyphs from one font to another with this app)
I have done this many times, but of course, I am a hobbyist, and not using KDP.