Hmmm...all this information is giving me great ideas. My son believes in total abundance. Why save when there is always more? If I don't give it to him, he finds another source.
My therapist recommended giving him an allowance with no strings to teach him. She also believes he will learn by example.
A cute gimmick I saw was a ten year old girl who bought cheap flip flops and decorated them. Then she sold them for $10. Cute--she had twisted balloons around the strap part.