The Hipster PDA (2004)

I still use this method, except I lean towards very large binder clips and several stacks of cards (work, personal general, personal writing project). I keep piles of blank cards on my desks at home and work and I stock up when they are BOGO or on closeout. The key is to have so many on hand that you have absolutely no mental barrier to using them up or recycling them.

The main things I like about it: I generally have a pen around so it's very easy to add a note without fumbling around for any more window real estate on my computer. I can review/purge/recycle stuff in a diner or cafe over coffee without using a laptop. If I spill coffee on it, it doesn't matter. And it feels good when I can recycle a card because the work it represents is either finished or now unnecessary. Also, I don't have to worry about being unable to look something up or organize some tasks if a battery goes dead.