What are some things shaped like triangular pyramid?

The Louvre Museum, in London has a glass triangular pyramid in the center.

Toblerone chocolate bar boxes are triangular pyramids as well.

A more obscure triangular pyramid, found at home, is the corner of a zip-lock bag when it is filled with liquid!

The game pieces of trivial pursuit are as well.

Sometimes wedges of cheese are in this shape, or some teabags.

And a triangular pyramid can be made by cutting any 4-dimensional rectangle in half, in a diagonal line. For example, this can be done with a stick of butter.