Apple's iPad was the first consumer-level device with multi-touch capability, something I'd been wanting to develop software for for a long time, so I got one and developed a "toy" application (Harmonizer) to get my feet wet with programming.

An unexpected bonus was that it was the best hardware (since the original 1988 DOS-based MAM with dedicated hardware support) for playing MAM videos (which I'm now selling on Cerizmo for viewers who want the best possible quality).