Well, you can do it the good ol' way with ceramic piggy banks that do not open but need to be crashed with a hammer.
Anecdata, I had one in the shape of a dinosaur, must have ben 5 or 6 and I still remember (some 50 years later) the day I decided that I needed a new toy the doubts about actually breaking it (with the assistance of my dad) and perfectly remmber the dinosaur, whilst I cannot remember at all which toy I was willing to get, probably a toy gun, but I am not sure.
Anecdata, I had one in the shape of a dinosaur, must have ben 5 or 6 and I still remember (some 50 years later) the day I decided that I needed a new toy the doubts about actually breaking it (with the assistance of my dad) and perfectly remmber the dinosaur, whilst I cannot remember at all which toy I was willing to get, probably a toy gun, but I am not sure.