JaDe Rain

So, I have this dream of cutting my veggies and dropping the compostable items in a tube that runs at an angle out the cob wall into the compost pile.

I haven't composted other than a heap. A friend said the rotating barrel was the easiest. In my mind this works like a bingo barrel.

What would you suggest to be the best method for dream compost shoot? Also, should I think of something to keep critters out of the shoot? There will be a lid on the end in the kitchen. Maybe a rubber funnel shape that opens more when full. But doesn't open in the opposite direction?

Looks like we are going to buy a junker home (permit reasons) and replace walls with cob. When you cob around objects what do you do to not crush the objects? Like an hvac duct. Lay plank of wood across the top? Or, with electrical, tub with just electrical conduit or would a larger pvc tube be a better option? Or, what?