Things You'll Need
Instructions
Create a pattern for your blocks. Use the card stock or thick paper to trace and cut out your pattern using the scissors. Use multiple patterns for different shapes.
Common children's block shapes include squares, rectangles, triangles and circles. More complicated shapes include octagons, hexagons, trapezoids and ovals.
Trace your patterns onto the 2-by-4-inch boards. Make several copies of each shape on the wood. Place the patterns close together, but allow enough space for the saw blade to cut through the wood.
Cut out the shapes with your saw of choice. Follow the pattern you traced on the wood. Follow all safety precautions of your woodworking tools.
Soften the edges of the cut blocks using a router, if you have one, or by simply rubbing with sandpaper. Using a router on the edges adds a professional look but is not necessary. Use leftover sandpaper from another project and a few minutes of elbow grease to soften the rough edges of the newly cut blocks.
Clean up your new blocks before use. Young children will put just about anything in their mouths, so remove any toxic residue, sawdust or splintered edges. If you have nontoxic, lead-free paint available and want to jazz up your blocks even more, brush on a coat or two and let dry.