Christmas present! Birthday present! Other occasions! Print them out now, save your change, and give them to your children or grandchildren when the time comes.
I travel back and forth to the UK so I needed a piggy bank to keep my pounds in too, and to be able to tell them apart. There are four, three with currency symbols for dollars, pounds, and euros, and one without. This one is for pounds. Look for Pyramid Piggy Bank to find the others. These are traditional style - break apart to get the coins (or spend a long time shaking them out). If you're careful about cutting it open (the responsibility is entirely yours), you may be able to superglue it back together. This prints in one piece.