The problem, however, is that these dongles can be quite limiting as they could only plug in just one type of device.
One solution is this 5-in-1 Connection Kit featured on USB Fever. This adapter allows you to connect your iPad to a TV for video playback, SD and microSD cards for data transfer, computer for data sync, USB port for charging, keyboard for data input, and DC for photo and video input.
The dongle works for both the iPad and iPad 2, but on a limited number of firmware. Users are also advised not to plug multiple attachments at the same time.
Oh, and did we mention it costs US$44.99? But people will buy it anyway.
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