When you copy a block of text in Visual Studio (CTRL+C), you may not know that the text is placed on a "Clipboard Ring". So when you copy another text block, the first text block isn't removed, it's just moved down in the queue, on the Clipboard Ring.

You can see the Clipboard Ring as a section in the Toolbox. You'll see an entry for each pasted item. You can click these with your mouse, and the item will be inserted at your current cursor position.

Normally you would CTRL-V to paste an item. This will deliver the first item in the Clipboard Ring. CTRL-SHIFT-V will paste the first item at your current cursor position, but will highlight the text, just pasted in. Without lifting the CTRL-SHIFT and repeating to press the V key, you'll cycle through the Clipboard ring.

This is especially effective if you have to copy multiple items from one screen to another. No more going back and forth, simply copy all the items consecutively, and then paste from the Clipboard Ring.