WoodChuck

If you own a table-saw you are already a woodchuck.  Unfinished toy blocks are simple cubes 1.5 inches on each side with no sharp edges and no sharp splinters.  Made from Spruce, Pine, Fir lumber (SPF),  a construction 2X4 stud. These can be made on a table-saw.  Sanding smooth provides a paint-able surface.  Leaving smooth knots, rings, grain is acceptable and educational.

A softwood like SPF is desired for its ability to absorb water based craft paints.  Please, No Hardwoods.

For safety reasons Never use treated or painted wood or stained wood or dirty material.