For an overall washdown, I do it outside the front door, with a bucket of soapy water and a sponge, followed by a rinse bucket. I bounce the bike of excess water and dry with a towel. Then for the drive stuff, I go inside, lay down a few newspapers on the carpet, and set up the Feedback (nee Ultimate) bike stand. I can raise the bike so I can move a trashcan under the area I work on (rear, chain, cranks) and can sit on a chair. I'll use a paper towel or cotton rag around the rings and like floss on the cassette. I simply run the chain through a rag, oil the chain, wipe, repeat, maybe a toothbrush if it looks like crud in the links. I've just never felt like cassettes and chains are worth removing to thoroughly degrease regularly. I just oil and wipe the chain fairly often. I don't feel I have any wear or performance problems after decades of my regimen.