A cellphone with no flips, no folds - just a very low price
iht.com
iht.com
You can pick up pay as you go Nokia S40's for £20 or so these days too.
The tricky part is designing a UI for illiterate users.
I bought one for $40. The calls sound clear, the battery lasts for 5+ days, and you can run over it in a car without breaking it.
My current phone is AT&T's $10 Go Phone (some kind of LG), and it has a color screen, customizable menus, and better voice quality than my previous phone (an LG flip phone). It's also light, small and has decent battery life.
Of course, I'm just waiting till I'm eligible for an upgrade so I can get an iPhone . . .
Finally. Just what I'm looking for.
These also look nice - http://www.jitterbug.com/Phones.aspx.
Although they are not so cheap initially, since they offer lower-priced monthly plans than I have seen elsewhere, the cost of the phone is paid back relatively quickly if you only need an hour or so per month.
Also, I think they have a kind of Kramer appeal.
I work in a secure facility, where cameras are not allowed. Do you know how hard it is to find a phone w/o a camera in it these days? It's actually a PITA! And that's just silly... :)
Though I heard a month or two ago that the regulations for some secure sites have been changed to allow cameras on phones. Several people I know who have not gotten cells are now looking at getting them because they can keep them when at a secure site.
This is all experience with military contractors in St. Louis, so your mileage may vary.
But I would use one of those in a heartbeat.