If you or your kids are getting into 3D pens, this stencil book is absolutely essential! It comes with 40 different patterns spread across 20 pages - everything from simple shapes to more detailed designs that help you learn control and technique. The reusable PVC transparent board is genius because you can lay it over any pattern and your 3D creations pop right off without damaging the paper. No more worrying about burning through pages with the pen tip! The patterns are colorful and engaging, perfect for keeping kids ages 8-12 occupied for hours while they develop their creativity and fine motor skills. Even adults learning 3D pen techniques will find the progression from easy to advanced designs really helpful. The book itself is made from quality paper that holds up well, and the PVC board cleans easily between uses. I love that it includes both positive and negative space patterns - really teaches you about structure and support in 3D design. It's the perfect gift for any creative kid or anyone curious about 3D printing pens. The designs range from animals and flowers to geometric patterns, so there's something for every interest. Much better than trying to freehand everything when you're starting out! The whole set is lightweight and portable too, so you can take it to friends' houses or on road trips. Seriously, if you own a 3D pen, this accessory will completely change how you use it and dramatically improve your results.