Take one potato ...

... a tub of kid's poster paint, some nice textured card and a bit of imagination, et voilà - one of the neatest (and cheapest) save the date cards we've ever seen!

They're a bit smaller than a postcard, details are handwritten on the back, and they have "Potato Print by Rob & Mary" on the front in the manner of a limited edition fine art print, which we thought was a seriously cool touch.

And in case you never watched Blue Peter, there's a beginners' guide to potato printing here