ALTMAN 2 Pack Ice Cube Trays | $7 | Amazon
Graphic: Erica Offutt
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If you think back to the last time you paid $16 for a cocktail, chances are good it had one of these giant ice cubes in it. The thought process behind that is the bigger the ice cube, the slower the ice melts, therefore allowing you to enjoy your drink undiluted for longer. And, of course, it looks cool and gives them an excuse to charge you more money.

For just $7 today, you get a sphere and cube mold so you can start making your own fancy drinks at home. Cheers!