the first thing that comes to my mind is 1 of those older AT&T phones....
the keypad is sort like that and some models are lighted....
also.... AT&T phones (older styles...) are older technology...
that means the circuit board are bigger... bigger traces...
easier to hack... and maybe a little harder to break....
a phone like that I think costs about $10-20... (not sure...)
if you like to hack around.... and have some budget....
I guess that is not too bad....
hope it helps....