My brother marks his undergrad's papers from his bathtub, and frequently computes there. He has a wood board that goes across the tub. A compromise of ergonomics, but, he maintains its still the best.
|
|wall
|
|
|_ _
| |tub| |
| \___/ |___bathroom floor
_______
| |
That way I could still code with the bathtub more than half full.