Update:
Another sketch:
Original Post:
I’d like to get some character in there, similar to the money in Conker’s Bad Fur Day - maybe bit more friendly 
And then have some smashing opening effect inspired by …who would have guessed, Overwatch! yeah
Style would be in the direction of the Discworld “Luggage”
…not sure about that many feet though 
Little storyboard sketch:
I have to say, between the “Conker’s Bad Fur Day” and Luggage from Discworld references, I am pretty excited to see what you do with this!
Whoa! I love mimics! Very exciting about your final results!
That is a super fun idea. Can’t wait to see it in motion!
Did a first blockout of the chest - Thinking about leaving arms and legs out and conveying all animation via object and material anims. Just to shy away from expansive rigging and skinning 
