I actually bought and used the "Sugar Mold Heart & Flower Type" I found at a 100-yen shop. It is an item that you can make cute sugar cubes using commercially available sugar.
The only ingredients are granulated sugar (fine is recommended) and water. First, add a few drops of water to the granulated sugar and mix well. The standard amount of water is 3 tablespoons of sugar and 3 spoons.
Fill the mold with the mixed sugar and press it firmly with a stamp to harden the granulated sugar.
After embossing everything, put it in the refrigerator and leave it for a day. Make sure it's solidified, remove it from the mold, and you're done!
When you tap the case lightly, heart-shaped and flower-shaped sugar pops out. Mixing sugar with colored sugar or flavor powder will add color and make it even more cute. Since you can make 12 grains at a time, you may want to keep them.
A 100-yen item "Sugar Mold Heart & Flower Type" that will make your tea time a little more enjoyable. When you see it, pick it up!