Finding other individuals with the motor skills to put them together is a bit more challenging and I have to make sure that the size openings match so that the shapes are interchangeable even though I am asking them to match colors. I don't want them to find this frustrating... this type of motor planning success seems to build self-esteem to try other challenging tasks such as tying knots and connecting zippers....
Source: Simple Weaving Shapes for Children with Autism by RecyclingOT
Source: Pull-Apart-Plastics Develop Fine-Motor Skills by RecyclingOT