Re: What did you do with your seats?
It is very wise to re-use the foam in the bus seats. If you were to buy new foam, you would be frightened at the cost.
Also the metal frames can be made into many things. A welding device would most likely be needed. However, if you are clever, you can get by with a hack saw and bolts and nuts.
A HACK SAW? Yeah, I know that that is unreasonable. I would use a jig saw or a sawzall with a metal blade, then I would use a hammer to flatten the ends with a big hammer.
Mother is the necessity of invention. (Oh wait, how does that go?)