I've been borrowing a G4 iBook from the school to use as a laptop on the road the last couple of weeks and have decided I'll order one later this spring (once the Tiger OS revision is released) so that I can get the up-to-date operating system as well as iLife '05 with the new machine.
The coolest accessory for a portable Mac can be seen here: www.foofbag.com. This site features some funky-looking covers for iBooks and PowerBooks from a purveyor Down Under. I've already ordered one as well as an iPod cover, which will be a gift, from the companion foofpod.com site.