Technically, it should be a different kind of baked treat, but we still wouldn't say no to a slice of this Pi cake pan.
(Credit: Perpetual Kid)
Coming in at US$11.99, it's made of silicon, which is better for baking because it's flexible — it makes it easier to get the cake out.
We suppose that, if you wanted to get really clever, you could put a pie in the cake. Actually, that's exactly what should happen. Send us pictures. Or a Pi-cake-pie. It doesn't matter which.