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Best Overall
Bella Amazing Premium Ice Ball Molds (6-Pack)

Slow-Melting Ice Spheres
This multipurpose pack of six molds allows you to create perfectly-spherical balls of ice for cocktails, iced fruits, frozen herbs, alcohol infusions, soap balls, and a variety of other spherical treats.
What We Liked
These BPA-free, food safe molds offer a space-saving, stackable way to create perfectly round 2.5-inch balls of anything you want to freeze. They’re particularly crafty for having a slow-melting way to enhance whiskey, scotch, rum, bourbon, and a variety of other spirits. They’re completely dishwasher safe and reusable and won’t dilute the ice or leave your drinks with a plastic-tasting aftertaste. In addition to using in cocktails, you can use the molds to freeze fruit juices, herb-infused olive oil or butter, fruit sorbets, or for crafting soap balls and other moldable crafts. Get them here.
Most User-Friendly
Tovolo Sphere Ice Molds – Set of 2

Create Sophisticated Cocktails
Made of BPA-free plastic with a tight-fitting and spill-proof silicone cap, this set of two molds allows you to create long-lasting ice spheres that fit perfectly into lowball and highball glasses without diluting your drink.
What We Liked
The sphere ice molds are part of the Tovolo range of molds that include fun shapes like mustaches and golf balls. The spheres measure 2.5 inches in diameter and are created by simply filling the mold with water up to the designated line, sealing with the silicone cap, and waiting until the ice sets. Upon completion, the spheres allow you to quickly chill your favorite cocktails without worrying about them watering down and losing their integrity. Depending on the drink, a single sphere can retain its shape and temperature for a second refill. Buy them now.
Most Versitile
Adoric Ice Cube Trays Silicone Set of 2

Perfect Ice Spheres and Cubes
Choose your shape or use a combination of both spheres and cubes with this set of two silicone ice trays.
What We Liked
With this set from Adoric, you can create both perfectly round spheres and sharply-lined cubes to enhance your favorite whiskey, cocktails, juices, and teas. The molds make six of each shape and the food-grade silicone trays are soft, flexible, and make it easy to release the ice. The trays are dishwasher safe and rated to withstand temperatures down to -140 degrees. Buy them here.
Best Design
Shaped 3D Skull Flexible Silicone Ice Cube Mold Tray

Slow-Melting Ice Skulls
Perfect for Halloween and house parties, these ice molds from Shaped create detailed and realistic molds of (human) skulls designed to keep your drinks cooler for longer and add a unique appearance to clear cocktails.
What We Liked
This silicone tray creates four, extra-large skull ice molds approximately 2 inches in size. When placed into a rocks glass with whiskey, scotch, or any other (relatively) clear liquor, the skulls shine through with a cool-looking (albeit sinister) glow that makes your cocktails much more fun than traditional sphere or cube molds. In addition to ice, these molds are great for making jello, chocolates, cake pops, and a variety of other themed treats and crafts. Get them now.