You know how you enjoy doodling when you’re waiting for things to happen? Like exams to finish, doctors to be available and the working day to end at last? Well now you can carry around your very own erasable doodle pad, to make sure you’re never short of a place to let your imagination run free.

The iPhone 5 Sketch Board Case is, as the name suggests, a protective case for your iPhone handset which includes a cute little erasable pad on the back, rather like those kid’s toys you remember from a decade ago.

The idea is you scribble to your heart’s content, and when you’re done, just use the handy swipe erase to remove all your rubbish and start again. Oh sure you can also use it for more serious purposes, like back of the envelope venture capital calculations or grabbing the phone number of that Nobel prize winner you met in the bar, but mostly we suspect you’ll end up doing funny faces. Lots of them.

The product comes in a range of colors and is equipped with its very own stylus, so you won’t even have to borrow one from the lady next door. Priced at $12 plus shipping.