The iPod Shuffle. Up to 250 tunes and smaller than a pack of gum. $99.
The Mac mini. 2.9 lbs. 6.5 X 6.5 X 2. $500 base price. $1000 fully packaged.
Update June 6, 2007: Apple stock closed at $64.56 the day the above was written. It later split 2:1. At this writing it is $123.00. So $1000 in Apple stock when the Shuffle and Mini were announced would be worth $3810 today.