Thanks; perhaps I wasn't clear (enough?). We
have digitizing software—Bernina DesignerPlus (which includes a stripped-down version of CorelDRAW as its drawing/graphics editor); it's vector artwork to digitize into embroidery designs that we're seeking.
I took a look at Embroidermodder. It looks interesting, but DesignerPlus (despite its drawbacks) is a bit more functional/sophisticated. However the real deal-breaker is that Embroidermodder is not compatible with Bernina (and
none of the embroidery formats it
will handle are stable!

)
We've run into a similar problem with vector files; many that are available free online are not in .cdr (CorelDRAW) format, and are not stable when loaded into the Corel editor, and/or when converted into .cdr format before loading.
Hence my OP seeking sources for free vector artwork in Corel (.cdr) format.
Computers are so much fun.
Doc