Recording video* is easy; you can do it on most mobile phones these days.
And on that note, the wiki indaba conference was recorded solely on a mobile phone[1]. Although sound quality wasn't the best, with considerable thought on getting an appropriate accessory to handle sound, phones are also an alternative worth looking into.
[1] https://www.youtube.com/playlist?list=PLTdU_5c77__7y3igaHAauOyAvo2crj2cp