The Selection Brush tool
Photoshop Elements ships with a range of selection tools, all of which offer slightly different selection capabilities. Here's a neat one called, simply, Selection Brush!
This tool features the excellent Selection and Mask Viewing modes. It operates just like a paint brush. Click and drag across your subject and it will appear to draw two selection lines, one on each side of the brush. Swish the brush tip around and you'll see that it fills in those lines, making the selection increasingly larger. This is a reasonably capable tool, while its Mask mode is a feature I use frequently to preview and edit work done.
