Golden Anvil

A Hipster PDA that is (and here)... For those who don't want to bother checking the links. This is essentially a organization tool for those who don't want to spend the excessive amounts of money (or have to worry about batteries, or software, or upgrades, etc) required to get a "real" PDA.

From the first link, the steps to create your own are as follows:

1. get a bunch of 3"x5" file cards
2. clip them together with a binder clip
3. there is no step 3

The second link above even has templates you can print out on cardstock 3x5 cards to give you charts and calendars and checklists and such.