just a thought for the computer object.
If you like an object in the world, such as a graveyard fence, you could take a sample from it, and take it back to the computer, which could have an add on called the physical materializer. this add on object allows you to scan samples of objects into the computer, and the object they were taken from are materialized. Then, you simply take them and use them as a normal object.
The computer in itself could have hundreds of different add on objects, which do different and interesting things, but you're limited to ten per computer or something. haa!
What do folks think?