Adonit Jot Pro
What it is: The Jot Pro is a stylus for your touchscreen devices.
Why it's awesome: Though you can pick up a cheap stylus for a few bucks, the Jot Pro's fine tip makes it one of the most accurate such instruments on the market. It's ideal if you use your tablet for illustrating. The Jot Pro also features built-in magnets for stowing it on the side of your iPad.
Where to buy: Amazon