Dude, if you’re gonna go all retro simple basic-tastic on me, then this HandleEasy 321rc remote control is the way to do it. On, check. Off, check. Channel and volume, check. What, you need more? £17.99 (a mere £3 a button).
Doro HandleEasy 321rc is specially designed for people who have limited dexterity. It is very easy to hold and to use for changing channels and adjusting the volume of your TV or home stereo.