If you are on a big adventure collecting either soil, scraps or resources it can be difficult to return all those items into your base, especially if you have multiple rooms, each dedicated to a certain machine or storage area. Now it would be great if there would be a conveyor belt or a pipe waiting for you at the entrance which would automatically transport resources to a certain room. Of course there could also be some kind of a filter which would determine what item can go through it and in certain direction and drop the item into the platform or storage. The item would be considered as an end item, so it would perhaps cost rubber and a very valuable metal. Also the transportation would cost some power so it's not too op. It would be created/placed just like the extenders ( a number of that item as one). There should also be some kind of junction, thats where the filters would become useful.
I hope this sketch can show you the idea as much as possible.