It might be hard to believe, but these colourful illustrations of 3D pencil cases are just an optical illusion. They're all real pencil cases that use bold lines and strategic angles to seem like they're 3D from the right angle.
Don't believe us? Here's a shot of the purple one from another angle.
Pretty clever, right? They range in price from 577 yen (£3.40) to 787 Yen (£4.60) depending on their size, but since they're currently available from a Japanese site called Bundoki, you'll have to tiptoe through a crudely translated version to buy one. [Bundoki via Spoon & Tamago]