Crayon guide
thingiverse
I've discovered a fantastic friend for my crayon collection: https://www.thingiverse.com/thing:2249013. My youngster is absolutely smitten with it!
Download Model from thingiverse
With this file you will be able to print Crayon guide with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Crayon guide.