How often do you find yourself at an office door, wishing you could leave a note to describe you've been there? There are many situations where having a post-it handy would be, well, awfully handy. With a simple hack of your hipster PDA, you can have this power at all times!

1) Chose a index card to be part of the PDA. It can have text, but you won't have access to it. I use a blank one.

2) From a standard 3X3 post-it stack, remove 3-6 post-its at once.

3) Affix the post-it stack to the top of the index card. I find the very top works best because you want the clip to grab the post-its to prevent the PDA from bending.

4) Return the card to the PDA deck. I find the middle or the back of the stack works best.

Wa-La! Now the next time you're on the road and you need to leave a note, you've got a post-it and a pen handy! Great for letting people know you stopped by. Just don't forget to re-fill the stack when you use a few.