Please share your best magick commands

Having found imagemagick recently I’ve been playing around with various commands to give me what I needed, FYI - my primary goal was to take multiple screenshots and use montage to create a simple grid layout of them to go out in an email.. With my goal met, I’ve seen people create images from scratch which is amazing, and I’ve looked at loads of example commands on the IM website, but would love to see and learn from any real-world examples. So if anyone would like to share please do..