While I have been slowly doing the ceiling, I've parked the van on the opposite side of the street facing the wrong way of traffic so I can work on the driver's side. I have sanded and cleaned the rims, giving them a shot of Montana brand metallic silver spray paint. Cheers them right up. I had thought about gloss black, but I happened to have this spray can already, so I went with it. Sometimes my decisions are based on being a cheapskate.
The footwell had been repaired at some point in the van's history and had a piece of metal welded in. This is a notorious rust area for Mercedes Sprinters, so I was pleasantly suprised to find it already in great condition. I did not have any protective paint over it though, so I slapped a thick coat of gloss black oil paint on it. Three days later it still wasn't completely dry, but that didn't stop me from replacing the footwell plastic.
Before returning the footwell, I covered the outside of it in layers of cork and glue to help with sound deadening. The road noise in this van is horribly loud. Anywhere I can shove some cork, I do. The formerly white seat box is getting painted gloss black at the same time. A new black carpet from ebay makes everything look great.