Staying up to date with programming skills

So for those with Softtware Engineering background but are now in Security Engineering, how do you keep your programming skills in shape if you're not getting a good dose of programming in your daily Security role?

Are there personal project you've worked on in the past that has helped? Integrations you've implemented in your daily job that has helped you keep your programming skills in shape?

If you're willing to share. I'd be interested in hearing some of them.

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