Snowflake: (some assembly required)™ Paper Craft Kits, Rubber Stamp Set
What Can You Do With a Piece of Paper? Sliceforms
Snowflake These Snowflakes come in three sizes. They all fit together, so you can make up your own combinations. This model is actually the simplest one we make, consisting of 3 identical pieces plus another two half-pieces. Simple as it may be, it is also the trickiest model to put together; as its geometry is triangulated, instead of being square like the others. All products for this model come with a Trainer, which is a simplified version without all the points and holes of the regular pieces. This makes it much easier to see the slots that go together and how the structure works. You can also make flat versions of the Snowflakes with the Stamp and Die Sets for this model.

Note: This model does not collapse! You can use it for ornaments and decorations, but not in a card.