I love my Palm PDA (Personal Digital Assistant). I'm (almost) ashamed to admit that lately I've only used it to play games while I'm taking a breather between writing tasks.
I'm using paper notebooks, and index cards as my primary writing PDA again. I'm a big fan of the Hipster PDA, otherwise known as index cards.
When I've finished with a card, I recycle it. Rip and it's gone.
Yes, the PDA is useful. However, it's not a tabula rasa. If I open it to jot down a note, I'm distracted by all the other notes I've written in the past day and week. And, by the time I'm into the swing of Graffiti again, I've forgotten some of the brilliant idea I just had.
OTOH, with an index card, I scrawl a quick note and prop it on my desk --- I'm not distracted by other cards, and I can add to the card whenever I happen to glance at it.
Works for me.