Dice are a really easy thing to design using Tinkercad. You can create them with numbers, letters, dots, shapes, or whatever you want. You can use any of the shapes to make them or use the handy Dice shape they already have in the basic shapes menu.
JON-A-TRON has a great tutorial he made a couple years ago that will walk you through the steps to making your own dice.
All you really need to do is drag the Dice shape from the menu on the right and then decide what other shapes you want to add. Make those shapes into holes, line them up, and group them.
Dice are great as they are really easy to use so it is nice to be able to 3D print and replace as many as you need.
I made a set with letters and shapes, and then made them larger for my daughter to play with.
What's really nice about these is you can print a couple small dice (about .75") in under an hour or print 1 large one in an hour.
To make them easier to read, you can print multi-colored dice with a multi-media extruder. If you don't have that ability, you can simply use a sharpie or acrylic paint to fill in the designs and make them easier to see.
In the meantime, please see our recent posts titled Hello Tinkercad Friends! Let’s #TinkerTogether and Parents Guide to Starting Kids in Tinkercad. They provide more information on some of Tinkercad’s useful features for parents, teachers, and students.