How to effortlessly save 300,000円 in Japan!

Step 1 Go to the hundred yen shop! (Any)

Step 2 Buy one of these Money Boxes for 108円.

Step 3 Place it in your house/apartment/ whatever!

Step 4 Place all 500円 coins you get in it.

Step 5 open when full. (1-2 years from experience)

Step 6 300,000円