Disney's Moana - Kakamora build

Hey all - I'm looking to have a go at making one (or a few) of the Kakamora's (funny little coconut guys) from Disney's Moana.
As they are all different it looks like we can actually throw in a little bit of creative license, and have some fun with it.
Also as they are quite rough, it's something I can do with my daughter too.

However, I wondered if you guys had any tips on what/how to creat the arms and legs?
the Coconuts are armour, but you don't know what they look like inside, so I'm just going to worry about the visible parts.
but I do want them to protrude from INSIDE the shell.

So any suggestions?

I'm thinking using clay to sculpt and some sort of wireframe to connect them inside...

Anyway - here's a Kakamora:

this is my kakamora currently in-construction



i choose the one with the spike fich on his head
i used a coconut shell foam sheet and i'm planning on using sculpting clay or polymer clay for the arm and legs but i got no time for the moment ^^

Quick update - little family bonding craft time and we've made a little progress.
we have 4 to build now.
tops chopped off, scooped and face shape created.


Then we've all had a go at sculpting some legs.
(my daughter wants hers sitting down, hence why hers look like they've fallen over)
When these are dry we'll have another go at them, filing etc..,


Then just to try it out, we painted the base of the face on one...


So far it's a great little family project.
I did have the idea of if they were any good, opening up a little Etsy shop and seeing if they sold, but this is more like a labour of love.
(that and it being more work than expected!)

it may may go downhill on the arms as I'm not good with hands...

These are awesome. Do you have any pics of the finished product?