If you regularly develop in a CRM sandbox instance, a good tip is to change the theme of your sandbox so that it’s different than your production instance. Our production instance has the standard dark blue navigation bar across the top so we like to change that to bright orange for the sandbox. This way it is very obvious that you’re currently working in the sandbox. It’s an easy visual cue to remind yourself which instance you’re in.
Change your theme by going to Settings > Customizations > Themes.
