What physical security measures should be implemented to enhance cryptocurrency security?

Considering the ever-evolving threat landscape surrounding cryptocurrency, what specific physical security measures should be prioritized to bolster the safety and security of digital assets? Are there any industry-standard practices or innovative technologies that businesses and individuals alike should adopt to protect their cryptocurrency holdings from potential theft or damage? Additionally, how can physical security measures complement digital safeguards, such as strong passwords and two-factor authentication, to create a comprehensive security framework?