Have you seen these 3D pens? They look really fun. Right now you can get the Da Vinci 3D Pen for only $19.99! (Reg. $69.99) To give you a price comparison, these are selling for $40 or more on Amazon. The XYZprinting’s da Vinci 3D Pen is a standalone device that can create 3D printed objects without the need of computers or Computer-assisted Design software. Create anything, anywhere. So Fun!