We looked at Creative's TravelDock Zen Micro back in June, and they're continuing the trend with the TravelDock 900 and two other portable speaker units: the TravelSound 400 and TravelSound 200. The $169 TravelDock 900 (top left) has a USB connection for playing and charging MP3 players (Zen Nano, e.g.) and will go for about 32 hours on four AAA batteries. The TravelSound 400 (top right) is a set of portable speakers with line-in that swivel 180 degrees for directional sound. They'll do 35 hours of playback on four AAAs and will set you back about 80 euros/$100. The TravelSound 250 speaker set is almost identical to the 400 but a bit lighter, only does 25 hours of playback on four AAAs, and is priced at about $89.