My wife's hands and wrists are very weak from arthritis. Its not quite the same. I'm usually on hand, but we went through a stage where I went out to work. Things weren't great.

Things you definitely need are

1) a picker up - these have like pistol grip and you can retrieve things off the floor without having to bend and steady yourself.
2) an electric tin opener - but careful many have two handed requirement
3)As much stuff with remote control as you can - tv, radio,
4) For a while we had a kettle urn, with a little tap on the side - you can get one from Stowes catalogue - a domestic sized one that is. it wasn't brilliant, but it saved her having to lift a kettle.
4) we put wooden blocks under the bed and the favourite chair, so she didn't have to push up out of a low chair. In the end we got an electric riser chair.
remove as many tops off bottles and things as you can, there are plastic tops you can put on in the chemist and hardware stores. Don't overfill kettles and leave them for her to have to pick up after you've gone.

anyway its never a brilliant situation - don't blame yourself for not thinking of things which will become apparent as the nature of the disability becomes more apparent.

best of luck

al