My mum was inundated with alcohol on her 90th - mostly champagne and Prosecco which she doesn’t drink - and none of the stuff she does drink (Cinzano and Tia Maria mostly). I would certainly say find out if she has a favourite tipple. And more flowers than we knew what to do with. Her skin is very sensitive now and she only uses olive oil soap. She does still have a favourite perfume - it’s VERY expensive so we club together to buy it! Again, I would say check first. Having so much stuff she didn’t know what to do with made her a bit anxious. She’s at her stage where ‘stuff’ is not always a blessing.
But she still does like anything good to eat, so a nice box of chocolates, biscuits or cake, jam and marmalade. She was eating her birthday cake for a week, which really helped prolong the pleasure. She won an hamper in a raffle a while ago, and really enjoyed the food treats in that. Also decent tea, coffee or premium soft drinks/fruit juices. And small amounts of fruit - especially grapes.
The other gifts that she really did enjoy were a couple of picture frames, and we had a nice time choosing things from her photo collection to put out where she could see them all the time.
More than anything, my mum likes time spent with her - I would say that the effort you’re making to see her on her birthday may be much of a gift as she will want. A token gift will be enough.