My keyboard is the laptop's built in one and the mouse I use is a £4 cheap one that came with the b model raspberry pi. My headphones are the bluedio Bluetooth over ear ones that were £20 so I have a pretty bad setup.
http://www.amazon.co.uk/gp/aw/d/B00VBUYHWU/ref=mp_s_a_1_1?qid=1449159945&sr=8-1π=SX200_QL40&keywords=tv&dpPl=1&dpID=51v8-rl1uBL&ref=plSrch
This is good for my nan as she is still rocking the CRT tv.