Stack and glue candle holders! Such a good idea. You can get the height seen in this topiary by stacking a few dollar store candle holders together. Glue them with a glass-appropriate glue (like spray paint black, and then place a flower ball on top.
Are you looking to ask her to marry you? This is a beautiful table to provide the romantic setting you'll want. Rustic wooden table, elegant chandelier, shabby chic linens, and simple floral centerpiece.
"This small crystal tree doubles as a wedding centerpiece & a table number stand." I'd put some of these around my house (minus the number) made with small branch pieces found in the yard and a string of beads.