So, full disclosure: this isn't a sanctioned option in your Settings, but rather a glitch in the iOS software that you'd be wise to take advantage of. First, head to Settings > General > Accessibility > Assistive Touch, and turn on the Assistive Touch switch. Then, get back to the Home screen, and drag the transparent Assistive Touch nub to the very bottom-right corner.
Next comes the weird part: activate the Spotlight Search screen by dragging the Home screen downward, wait for the AT nub to pop up above the keyboard, and click the empty part of the screen to dismiss Spotlight. You'll need to repeat this step several times -- there's no specific number, but it took me around 10 -- until you notice Spotlight's load and dismissal speed is faster, which signals that the glitch is now active.