Porcelain piglet bank

A porcelain piggy bank (short name: contenderspig) is a temporary artefact trinket which starts as a mere piglet and grows into a fully fledged piggy bank as its owner fills it with gold. Gold cannot be removed once put in (but is entirely safe from theft). It can be shaken to determine the amount saved. Smashing the piggybank destroys it permanently and retrieves the savings.

Syntax:

PUT GOLD IN PIG 
SHAKE PIG 
SMASH PIG 

Pieces:

• (1) The clay for a piglet bank, level 1
• (1) The ears of a piglet bank, level 1
• (1) The belly of a piglet bank, level 1
• (1) The tail of a piglet bank, level 1