Best bet I know of is to visit a friend or relative with "trees" & clip a branch, spray paint & plant it in a vase of your choice or tincan using hard plant foam. Have you tried "Goggling" ...would be hard to ship, I would think.

I googled tabletop ornament display trees and got several matches. Here's one you can start with. Hope you find what you're looking for. Luvs

Here is a link that might be useful: Ornament trees

I showed this here last year, for a Halloween Display and thought it might give you some ideas.
All I did was cut a large branch and paint it flat black.
I put the 'trunk' in a large can stuffed with foam and added
moss to cover the foam.
Hope this is helpful..

jane