Dave, I think any idea that circumvents hiring miniature carvers to create paddle box carvings is fine, esp as the little guys only work at night while we're asleep. Round paper lace doilies would probobly work for this type of ornimentation, depending on the pattern. Most of the eastern US sidewheelers used machine sawed cutouts highlighted with applied carvings, gold leaf and paint. A book of the Bard Brthers' steamboat protraits show light blue, red, gold, umber and green, sometimes with black shading.
Depending on the scale, another possability is to use the frets from folding fans - they come in plastic and wood, have cutout orniment and are tapered.
Of course our entering the "bead and craft" section of a local hobby supply will only embolden wives and sweethearts to wander among the lathes and planing mills. So be it.
Jim