I was going to suggest fairy lights but it has already been mentioned. My mum loved her laser twilight projector, but it wasn't cheap.
www.menkind.co.uk/laser-star-projector-laser-cosmos?utm_content=Laser+Cosmos+Projector+-+Laser+Twilight&utm_source=google&utm_medium=organic&utm_campaign=organicshopping&gclid=Cj0KCQiAhMOMBhDhARIsAPVml-HrzeYAE_utMtETaOI2iihXt6DYVAxIO3fjYnDKiSI-cfhxtPIMSdUaAl5uEALw_wcB
My mum also had a selection of small wine bottles in the hospice.
Things to offer to visitors such as chocolates and biscuits are nice.
A small fridge in the bedroom stocked with drinks and snacks and a coffee pod machine so she can have a drink whenever, even if someone is making the drinks for her it means she has company that she wouldn't get if someone was in the kitchen.
Oh and ice-cream, my mum devoured icecream and ice lollies.
Nice bed linen is another thing she might appreciate.
Oh and I know this is about presents but I'd like to give you a tip, towards the end my mum wasn't always continent, my dad would take her soiled nightgown and wash it at home (he didn't have to but wanted to), but the hospice told him to put the nightie in the washer still in the plastic carrier bag he took it home in, the nightie comes out of the bag in the wash so you are not handling bodily fluids.
IDK whether PP's have suggested it (probably) but you can get the things that play sounds such as a brook, waves, etc depending which you choose.
OP try the Alexa your mum already has, I love the thunderstorm noises and I'm sure there are others. Alexa can also read a kindle book.