Convert any laptop into a tablet for $130

The NAVIsis Laptop Tablet clips onto the side of your laptop and lets you tap, write, and draw on your laptop screen.

It's an enticing idea: replace your keyboard with a stylus and tap your screen--or write all over it--to get things done.

NAVIsis

That's the basic premise behind tablet PCs, and while they haven't fully caught on yet, the NAVIsis Laptop Tablet lets you give the tablet user interface a go without having to splurge on a brand-new tablet PC.

The NAVIsis Laptop Tablet is a $130 USB device that clips onto the side of your laptop screen and lets you tap, write, and draw on the display to your heart's content.

Sure, $130 is far from free, but it's an intriguing alternative to current laptop input devices: the jumpy laptop touchpad, the bulky travel mouse, or the effective but underused keyboard nub.

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