Well, unless you consider vintage glassware special equipment.
The thing is, you can do this trick with a lot of everyday kitchenware. While vintage glasses are more likely to have pretty little patterns cut into the bottom, some new ones do, too. Country Living, where we read this tip, mentions that you can also use silverware or Jell-O molds to press a design into your cut-out dough before baking.
We think a citrus reamer would work really well; just position the tip in the center of the cookie and rotate the reamer around, making ridges as you circle.
• See this and more sugar cookie ideas at Country Living.
Related: The Best Cut-Out Sugar Cookie Recipe
(Image: Frances Janisch)