If my computer is on, I record into my computer, sometimes using Audacity, which loads more quickly than Cubase. If my computer is off, I use my creative MP3 player to record ideas, as it's got a mic. If I don't have it with me (which is rare), I call myself at home and record on the answering machine, or call my mobile and do the same.

I haven't used cassettes for years. My problem was that I kept accumulating cassettes and I didn't know where my ideas were stored etc

My MP3 player has limited storage, which forces me to go through my ideas and organise them (eg dump them or record them properly on my computer). As for my ideas stored on my computer, i regularly go through them, as I store them in a folder on my desktop so it's right in front of me.