Amazon.com: Neo Smartpen N2 Bluetooth Digital Pen Compatible with iOS, Android, Smartphones, Tablets, and Windows PC with Neo Studio Companion App - Silver White : Electronics
Personalized Money: Have you ever wanted to put your face in the middle of a dollar bill. Or simply give it as a funny gift to your friend. Now you you can with a few clicks of your mouse!
Here’s a smart pen for paper note-taking you can buy on Amazon.
This is so much better typing on your phone or laptop!
Not likely to happen but you could do this, from instructables.
Post it notes makers are missing a trick here. others are profiting from making a whole wallet just to hold the pen.