Sharing this old script I've had for a few years.
I use it to quickly switch between kubernetes contexts
Assuming the script has been installed in /home/user/bin/rofi-kubecontext:
rofi -show kctx -modi 'kctx:/home/user/bin/rofi-kubecontext'
bindsym $mod+k exec "rofi -show kctx -modi 'kctx:/home/user/bin/rofi-kubecontext'"