The snap-on cases harken back to one of Nokia’s most popular phones of all time, the Nokia 5110, for which there was an endless supply of snap-on faceplates sold at innumerable mall kiosks.

In fact, the principle dates back to the Nokia 5110, released in 1998 (and as the 5120 in the US). Obviously, you'll need a 3D printer – or at least access to one – in order to use the 3DK ...

But if you'd prefer to make your own case, Nokia's 3D-printing kit is the ... to the great granddaddy of customizable phones, the Nokia 5110 and its rainbow collection of removable faceplates." ...