Taking mental notes does not help anyone else, bloggin' it might...
Smallest MP3 Player - MobiBLU DAH-1500
This tiny (1" x 1" x 1" and weighs only 18 grams) mp3 player is available at Walmart in 6 colors and 1Gig version costs around $130. There is good review about it at Anything But iPod Blog, well -worth reading.
Also check out MobileWhack site for specs. I like radio & firmware upgradibility features ;-)