Having a bunch of magnets in all sizes and strengths at hand is always a good idea. They are great for holding stuff in place, keeping doors shut and holding screws in place.
Cost of this article are around: 15 EUR
You can purchase the article under the following links:
Disclosure: Some of the links above could be affiliate links. This means that - at no additional costs to you - I earn a small commission when you purchase products through these links.