The Canary Command Menu now has improved behaviour for quickly executing the actions you want in DevTools. You can open up the Command Menu with the shortcut
Cmd + Shift + P.
To run a snippet, type in
!Your Snippet Name into the Command Menu.
If you type
? into the Command Menu, you see other options like:
The Command Menu has many other features, such as docking options, theme changing, and more. See a bigger list here: Tip #98 Command Menu