Maybe tidy the house and catch up with the washing on day 1, and then vow not to do anything for a week? You'll then have the 'end of holiday experience' of dealing with a week's worth of washing in one go at the end.
Have as much easy, treaty holiday type food as you like. Kelloggs variety pack cereal, or a chocolatey one that you don't normally have. Cooked breakfasts - some cafes are still doing takeaway breakfasts so see if there are any near you?
Takeaways, meal deals, barbecues, restaurant deliveroos, ice creams from the supermarket to have at home, whatever is a treat to you. As little cooking as possible.
What else depends on what's available nearby and what you've done so far in lockdown. All our big city parks are now open, after being closed until a couple of weeks ago, so get out and walk round those. We have a few farm shops near us with small petting zoos and ice cream counters, one is in walking distance of our house, so a walk there for an ice cream is a nice couple of hours out.
There's some attractions starting to come back, like drive in cinema, so it's just a matter of taking advantage of what's available to you. If you have a quiet beach within driving distance, you could go there, remembering to factor in a service station or supermarket toilet stop, as beachside toilet blocks might not be open.
Reading, films, box sets. Remember it's about relaxing and family time together, so whatever you want to do.