When working with k8s, you typically have several clusters and a bunch of namespaces per cluster, the following tools can help you manage the stuff with easy.
kubectx + kubens
kubectx allows you to change the context between different k8s clusters
kubens allows you to change between different namespaces in the current cluster context
brew install kubectx
More info here
Kube-ps1
Allows you to see the current context and namespace in the promt
brew install kube-ps1
More info here
Examples
kubeaudit
Great tool for auditing the security settings on your k8s clusters
brew install kubeaudit
krew
Krew is a package manager for kubectl (kubectl has an extensibility framework and this tool helps manage extensions)
Hope it helps! 🙂
approaching off the bow 