Before I had my op, 12 months ago, I bought the following items. I had my operation done privately but if the operation is being done by the NHS some of these items might be provided.
two grabbers to assist with dressing;
two pairs of crutches (so I could have an upstairs pair and a downstairs pair);
a perching stool with arms and a back for the kitchen (could also be used in a bathroom when washing):
a stool for sitting on in the bathroom;
a lower stool to help when getting in and out of the bath (advised not to use a bath until several weeks after the op) and also a stool by my bed;
a toilet frame;
(I am short and did not need a raised seat for the loo.)
a commode for the bedroom - which I only used about three times.
a sock aid - but it was too big for my size 3 socks and my husband used to put my socks on for me.
I didn't buy a walker but the private hospital gave me one to take home and I used it for the first two or three days, then went onto two crutches, then back to a single stick, then after about three weeks, I was able to ditch the stick that I had used for eight years and walk unaided at least in the house and later outside with no stick.
Before I was discharged on the morning of day 3 after the op, I had to be able to do a short flight of stairs with the physios and I was able to get upstairs and downstairs as I soon as I got home.
I agree that you need a firm chair that is not too low - so no low, saggy sofas.
I had bad swelling of my operated foot and ankle and slept on my back with my legs raised on a couple of pillows. Also used cold footbaths and icepacks to help with the swelling. Hospital gave me a wrap around thing for the thigh which you put in the fridge to freeze - but I did not find this much help.
It's changed my life. I was in so much pain before and my mobility was severely impacted.