case inspired by radica im-me toy

i been reading about this toy, the radica IM-ME, an instant message toy. its really interesting all the hacks they have make on this. i hope i can find one of those toys in my country.

reference image: http://ecx.images-amazon.com/images/I/51dryyeSdKL.SX300.jpg

i though, why not to make an arduino case like that toy:
An 8x24 LCD display, with back-light. The LCD has an SPI interface.
A full qwerty keyboard.
A piezoelectric sounder.
SOC with a highly hackable 900MHz transceiver and the main processor.(here having an arduino as its brain. and some FR chip.)
3 x AA battery holder

more details about the toy here: Dave's Hacks: im-me hacking

it could be used as a educational platform about RealTime OS devel.
like those old cellphones or scientific calculators.

now i will add a bunch of links to try inspire you all

http://www.ti.com/product/cc1110-cc1111

so with a case we could have something similar but with all the arduino documentation available and the a big community to support on the development

what you think?

what im trying to say is i would like to make a case/shild. i think i can make the electronic part but i cant make the plastic parts, so if other users like the idea we all could found it or something.

so far i been thinking on making a shield combining this parts:

only left to choose a FR chip.