Oh Barbara your post made me laugh...we have multiple calculators everywhere because DS5 loves them and has for several years...when he was 3, he would sit at restaurants/in the car/waiting for things and play with the calculator....we have one in his playroom, one in the car, one in my purse, one in his backpack....and then he saw a scientific calculator a few months ago and asked to put it on his santa list because he got all excited when daddy began to explain to him about the other number systems out there :-)