My colleague Rick Borstein asked,
One thing I like about Photoshop is that I can create a new document at the dimensions of the item on the clipboard.
It would be great to have this feature in Illustrator. I am often extracting logos and want to create a new AI file with an artboard of the same dimensions as the clipboard item.
It turns out you can paste an image into Illustrator, then double-click the pasted image using the Artboard Tool. That’ll automatically create the art board at that size. Alternately, you can make an action: Select All > Object menu > Artboards > Fit to Selected Art
[Thanks to Rufus Deuchler & Ton Frederiks]