Pressing and holding the Files icon on the iOS home screen allows you to directly access the scanning feature.
Pretty handy! I didn’t know this feature existed, and the scanner app I had been using stopped working a couple months ago and I haven’t been able to find a replacement that I was happy with.
On the latest iOS update, searching for the Files app also returns a shortcut to the scanner. Weirdly, searching for "scan" or similar doesn't return it... The icon is similar in design to the control centre so you'd think it could be added there, but again, it's unavailable...