Are you looking for a weekend project? Let me share with you this one, Your own Balance Board!!!.
Of course you might buy it but whether you are a real maker (you know what I meant) you will want to built it. And trust me it's quite easy.
You may adapt the design as much as you want, I decided to cut my stock wood on a circle, but maybe you wanna let your creativity go and create your own shape.
For this project I used next materials:
3D Printing Parameters:
Extras:
I added to the model SVG files as templates for sand paper grip and circle shape. In my case I used a laser cutter to cut all of them but I designed it to be printable as well.
The author marked this model as their own original creation.