You'll need a plastic mold. You can either use a novelty ice cube tray or small ice cream molds, or you can also use used plastic jello or pudding cups.

你需要一个塑料模具，可以是一个造型新颖的冰格盘，或者小的冰淇淋模具，你还可以选用塑料果冻杯或者布丁杯。

youdao

For a more subtle approach, how about the Titanic ice cube tray.

有一个微妙的办法，把泰坦尼克号的冰雕模型放在托盘里。

youdao

Leftover parsley can be added to chicken or beef broth that has been diluted and put in your ice cube tray.

剩下的部分可以加入鸡肉或牛肉汤里制成小方冰块。

youdao

The collector basically looks like a tennis racket filled with ice cubes, so this is kind of like a big ice-cube tray, and each ice cube is not made out of ice, but it's made out of this aerogel.

NPR: Stardust Set to Deliver Comet Samples