Whatever I
let him do.

I'm pretty particular about how things get done (laundry, dishes, cleaning) therefore I prefer to do it myself most times.
We have standing unspoken agreements between us. The interior of the house is mine, the exterior is his. Of course, there are some boundaries that bleed over from time to time:
The lawn is his, but I take care of the flowers and/or garden. I have been known to mow the lawn when he seems tired or has injured a muscle; he's been known to do the dishes, laundry and/or other cleaning projects when I'm sick or unable to (but don't tell anyone he does this).
The house is mine. His job is to take out the trash, do the repairs and kill the bugs.
The garage is his. My job is to leave him and his garage alone. He keeps it clean (or not). He doesn't criticize how clean I keep the house (unless he can't find something) and I don't criticize how he keeps his garage (unless I can't get to the car or something).
I agree not to touch his tools in the garage without permission (Craftsman, power tools, etc

) and he agrees not to touch my tools in the house (vacumn cleaners, washing machine, dryer, etc) without permission. Penalties for violating the "tool" rule can range from raised eyebrows and "the look" to hiding said tool. But that doesn't happen often.
It may sound strange, but it's a system that's kept peace in our family for years.