How could I decorate ugly furniture without painting it?

I am moving into a furnished apartment and absolutely HATE the mismatched wood furniture of the desk and dresser in the bedroom. The styles of the furniture aren't even the same (The Dresser being clunky and the desk being sleek). So how could I cover it up without painting it or anything else that would be considered "permanent". Buying new furniture is not an option.

Have you tried asking the landlord to purchase matching furniture. If this is not an option, you may try covering it with sheets and table cloths. Some stores do sell furniture coverings.