the other week i bought a micro taperecorder for £25 and i use it for listing the birds i see (or hear) when im out birdwatching. it is not much bigger than a mobile phone and it sits nicely in my pocket with plenty of room to spare. it beats struggling with pen and pad. the only drawback is i forget what birds ive said ive already seen, i feel a bit of a twit talking into it when people are around, and being small, it would be expensive if i lost it. but i wouldnt be without it now.