I've buried some, and thrown some out. Be aware that if you put a snake in the garbage, you should really keep it in the freezer until garbage day, then triple bag it or more. A rotting snake smells really horribly awful and trust me, your garbage men WILL begin avoiding your house like a plague zone.
If you bury a snake, bury it deep, and bury it where roaming dogs will not dig it up. Someone Fido coming home with a 6 ft long python in his mouth, you won't be able to convince people it wasn't an escaped pet, instead of a dead-properly buried one.
The beetles can make a really cool skeleton display, and you can wire it up and glue the ribs on, and it would be way cool. Just be sure you have somewhere to do it, because you don't want the dead snake lying on the coffeetable in the meantime. I have been told that it's best to skin them first, and remove extra tissue to help speed the process, so make sure you aren't too squeemish to do that part.