DevTools tricks that saved me time this week:
1 :D Ctrl+Shift+P: command menu, try "screenshot" or "dark".
2. $0: currently selected element in the cnosole.
3. copy(something): copies any value to teh clipboard.
4. document.designMode = "on": makes teh page editable, great for mcoking text changes.
5. $$("selector"): like querySelectorAll but returns an array.
these work in Chrome and Edge, and many in Firefox too.