Yes to Robovac!!! Had mine for 3 years. I'm evangelical about it. At least 5 of my friends have bought on the strength of my recommendation.
They deal with drops, level changes and steps. The thing that trips them up can be cables.
I bought the cheapest, entry level Eufy on an Amazon Prime special day thingy. I think it was £125 ? ish. Not super cheap but coming down to a hoovered kitchen ( I set at night ) is top. Bung it in the bedrooms and other rooms during the day.
Also
enough t towels
socktopus
'Tile' finder for my keys
Key safe outside the house
Battery powered light that comes on over my bins.
Glass boxes with lids for leftovers
plastic optic spouts on the oils by my cooker
Stash of Birthday Cards esp cheap kids ones
A big ole heavy office size sticky tape dispenser
a ball of elastic bands
a dog poo bag roll holder on a carabineri clip that has a house key on it,
More than one pair of scissors
Punching holes in loyalty cards and putting them on a big split ring .I know I should just go digital with them but haven't got round to it.
Tape measure in my hand bag
Slow cooker
First aid box under the sink - plasters, antiseptic, arnica etc
Basically what @AtomicBlondeRose said.