We all want the best for our babies, and if you are having your first child, you will probably be even more prone to buying the most expensive items, which you may never use. A classic example of this is a special airlock diaper bin you can buy for around $100/£50. At first glance this may seem like an essential purchase when in fact, for a mere 16 cents/32p, you can buy a pack of 100 diaper bags which can then be easily disposed of.