The Toshiba Thrive is both utilitarian and aesthetically pleasing. The Thrive can have its back plate removed to reveal the lithium ion battery inside. Not only can the battery be swapped out for a fully charged one (each extra battery costs an extra $90), but if you've grown bored with its plain black back, you can exchange it for something more colorful.
Extra back plates come in five different colors: blue, purple, silver, green, and pink. Each plate is available from Toshiba at $20 each.
Toshiba Thrive full review