How can I make the "show desktop" button bigger?

You can't according to Microsoft.

http://answers.microsoft.com/en-us/windows/forum/windows_10-start/show-desktopbutton-at-the-end-of-my-taskbar/bfc1b644-1578-4149-aeec-9d100c65b671

"I would like to inform you that you don't have an option to increase the size of the "show desktop" button. This is by design. However you may press Windows Key + D to show the desktop."

And yes, it is way too thin. It is barely visible.

Appreciate the info ---- this button is really too thin. I have dual monitors and it's just about impossible to get the button, it just slides over to the next screen.

Don't understand why break something that wasn't broken. Blegh.

Thanks.

Just found a great do it yourself quick fix for this issue.  Button is way to small in the default set up in windows 10, and with dual monitor set up forget about it.

Basically you create the show desktop command as a short cut and pin it tot he task bar, makes a decent sized icon (not too big) and you can slide it where you like and delete the shortcut you made off the desktop and it still works fine.

http://www.wintips.org/how-to-place-show-desktop-icon-windows-8-taskbar/