Re: is energy transmitted differently through differently shaped objects?

Yes, energy is definitely transferred differently in different media. This 
is the principle behind crash design and architectural sciences. The nose 
cone from the space program is designed to withstand impacts that other 
models could. The geodesic dome, from Buckminster Fuller is a classic 
masterpiece, because a simple "bubble" (the sturdiest shape known) is 
redesigned in triangle forms to help keep the facility very stable and 
able to withstand many thousand pounds of weight. Example - the Epcot 
Center. 
To really get to the heart of your question, I think you should experiment 
with your idea for this is the unltimate experience in science. Try a few 
things. This is an area where scientist are still just tipping the 
iceberg. There are so many new materials produced every year that the 
engineers who invent them don't often have a clue as to what environment 
they would be best suited in. 
Let us all know what you find. Oh, and stick with the spherical shapes for 
stability. Aristotle and the early greeks respected it for good reason. 
The egg, being a natural shape, isn't bad either.