The Coolest Birthday Presents Ever

(Not that the other presents which I received weren’t cool, they were very cool. These ones just stood out…)

Firstly, the 5x5x5 Rubik’s cube. Presented wrapped in two metres of bubble wrap, a present in itself.

The 4x4x4 and the 3x3x3 cube are presented here for scale (and mostly to show James Z that I did manage to solve the 5-cube.

here they are again, in all their glory.

The ACME Klein Bottle

For those of you who aren’t sure what a Klein bottle is… check out mathworld or wikipedia.

Especially amusing was the documentation that came with it and… the volume measure.

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