To extract icons as high resolution images in macOS, first copy the icon in the Get Info window, the create the image with the Preview app.
To prevent the Apple Watch from automatically showing Now Playing on wake, disable Auto-Launch Audio Apps in Display & Brightness settings.
Want to make things just a bit easier for your email recipients? Delete the "Sent from my iPhone" signature. Here's how.Open the Settings app, scroll down and tap Mail, scroll to the bottom and tap Signature, and finally remove everything there.