On the left, a promotional image from WobbleWorks!* LLC, creators of the 3Doodler, a pen that lets you print 3D creations as magical as your imagination allows. On the right, an actual 3Doodler creation. Whoooo, boy.
It is no doubt possible to make a convincing Eiffel Tower out of thin air with the 3Doodler, but not if you're a layman, and not unless you have dozens of hours and a wrist brace at your disposal. It's not quite in the same league as Photoshop trickery, but it's a nice little reminder that nothing in this life is as good as it might seem—especially if it's crowdsourced.
WobblyWorks!* LLC's Kickstarter campaign raised $2,344,134 from 26,457 backers.
*Exclamation point added.