3D axes
thingiverse
Three axes in 3d space. The different colors are painted on :) With this, you don't have to use your finger to show them the axis, that doesn't works good.
Download Model from thingiverse
With this file you will be able to print 3D axes 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 3D axes.