I have this great recordable piggy bank a boy given to school enrollment, since the serious side of life begins and you can start never early enough with the Save ;-). He was happy about it and wanted to totally equal start with the painting (luckily I had a big package of colored chalk concerned). We had so much fun. And as there was no room on the pig, we are simply wiped clean with a damp cloth and on it went.
A great attention for children but also for great bargain hunters.