Tobirama being a complete failure at mundane things is some of my absolute favorite things.
In the spaces he's carved out for himself he's a bit of slob, he can't be bothered to clean because it's an organized mess and it's perfectly fine Anija don't worry about why the desk is smoking it's supposed to do that, trust the process.
He's meticulous about organizing his finished work but can't be bothered to be organized with anything else unless it's in the office.
He often times comes home after a long research bender to flop down onto his bed (which has a pile of clean clothes not put away from a week ago) and rot for a few days before getting up and half heartedly cleaning until he's ready to be human again.
He can't cook, and when he does it's bland and somewhat singed because he gets impatient and will wander off, distracted, and will completely forget about what it was he was trying to do.
He's a shit gardener and Hashirama despares at his wilting garden and will complain about it until Tobirama grumbles and buys gardening books they both know he will never read.