You know you're old when the office supplies you used yesteryear no longer exists in today's modern world. On the other hand, you know you're really young and probably working in the wrong place if you see any of these things still being used. Either way, this generation and the next will never have the opportunity to use any of these things:

1. A calculator that has receipt paper attached to it. So cool.

2. This phone / printer hybrid. Print and call. Print...and call.

3. This cool PDA. You could play Bejeweled on this.

4. These space-consuming TVs.

5. This phone which has a wheel that turns. Warning: might by hypnotic to look at.

6. These number-showing gadgets. They buzz too. And they clip on your belt. WIN!

7. This instant printer. So damn high-tech.

8. This mechanical steam punk pirahna?

9. This cool flipbook.

10. These shiny circular things. Are they mirrors?

11. Paper that tells you where you are.

12. These squarish pieces of plastic.

13. This stay-in-office-the-whole-night dot matrix printers: