Can I buy anything I want online outside the Netherlands?

No, you are not allowed to have anything you want sent to the Netherlands.

Do not buy:

• counterfeit items, e.g. a fake Rolex watch
• medicines
• narcotics, such as hashish, cocaine and heroin
• animal products and foodstuffs, such as cheese or meat
  However these are allowed: chocolate, sweets, infant food including powder for baby milk and food for medical purposes.
• fresh vegetables, fruit, plants, flowers, bulbs and seeds
  Unless you have a special document for this, a 'phytosanitary certificate' ('fytosanitair certificaat').
• protected plant and animal species
  Also no products made from them, e.g. shoes made of crocodile leather or a hat with tiger fur.
• weapons and ammunition
  Read more at Weapons and ammunition.
• art and antiques
  You may not always send these 'cultural goods' (cultuurgoederen) to the Netherlands. If you are in doubt, ask whether you need a permit. This can be done, for example, at the Embassy of the Netherlands in the country from where you are buying the object, or with that country's Customs.