A decent locked storage valut will do the trick if the thief/s are not looking to do that much to get the contents out. Especialy if you do not have the tools afound to break into it.
A family friend that owns several rental properties had a case where the police had the wrong storage building number on a search warrant. They went into his sroarage unit where he had a safe. He also had a lot of his tools in there too. They used his tools to break open the safe, instead of calling a locksmith. Well when it was discoved how they screwed up. They did pay to replace the broken safe. (BTW there was nothing in it.
) It took them 2 and a half hours to get it open.