I'm 43 now, this is to give you some ideas. Back in 2014 and 2015, I spent both xmases in a nursing home after discharge from hospital until a care package could be put in place to my high level of assessed needs.
During both stays, first was 5 weeks the second was 17 weeks, I was placed on the dementia unit as it was where they had a high level of staffing and a room.
The nursing home "santa" came around first thing in the morning to deliver presents, All unscented toiletries suitable for male or femaile definitely appreciated
Suggestions
logo socks - with his first name and surname inital on, to help ID them (or Dr John (John Smith)
furry lap blanket for something to stroke, depends on how his dementia is it can be comforting to stroke - faux fur, look in B+M or Home Bargains
on the same vein, what about a cuddle muff or a twiddle blanket this can be handmade - basic sewing skills needed but if you can sew on a button www.goldencarers.com/pdf/5020/ thats a pattern, but can be adapted to suit or could buy one.
if he recognises pictures of family most of the time at this stage, how about a photo blanket, you can choose what pictures, what type of blanket and size, as his bed is probably single, I would advise at least a double blanket size to keep the heat in, the elderly can feel the cold even in the warmth of nh. photoblankets.co.uk/fleece-blanket/
Does he experience much agitation? What about a sensory scene, where sound is combined with scent to trigger memories using different senses such as walking thru a forest, rainy days, days in the garden, seaside days.
Does he experience Sundowning? So becomes more awake and restless in the evening and searching, - to help calm his mind down, how about something to watch, fibre optic lamp which runs on mains on a timer switch
Also to bring Christmas cheer to his room, it guarantees a lot of people coming to see it - www.amazon.co.uk/HOMION-CHRISTMAS-GREEN-CHANGING-STANDING/dp/B076BTHZ5V/ref=sr_1_fkmr1_1?s=lighting&keywords=fibre+optic+lamp+mains+multicolour&tag=mumsnetforum-21&ie=UTF8&qid=1541019930&sr=1-1-fkmr1
Or trouble sleeping? Maybe a relaxing lavender pillow, the lavender is infused into the pillowwww.unforgettable.org/relaxing-lavender-pillow?tfrid=e6dc11e4-d197-4d40-aafd-647761da74be
Yes, yes to sweets, treats of different kinds, esp if he has a sweet tooth and isn’t diabetic.
Re alcohol, contact the nurse on the ward and enquire as the NH I was in went by the a bit of what you fancy wont do any harm (unless of course there is a previous history of alcoholism and one drink would threaten soberity)
Side story - I came back late one night (about 2am) stinking drunk after a friend and I went out, as my night meds were officially due around 10pm, I had to skip them, they kept me up for an hour till I had 2 pints of water down me, gave me 2 paracetamol and got me into bed and turned me to the recovery position with supports behind me so I couldn’t turn over, I was also checked approx 5-10 mins and the bedroom door had to stay open. However I was very drunk and for someone who has less than a weeks worth of units a year, I outdid it that night, I was at least double the weekly units.
How is his appetite? www.amazon.co.uk/gp/product/handle-buy-box/ref=dp_start-bbf_1_glance?tag=mumsnetforum-21 - fact In Alzheimer’s patients, red colour dining ware increases food intake by 24% and liquid intake by 84%
What about heat / cold? The infrared lap blanket is cheapish to run, his electric use should be covered by the NH - www.unforgettable.org/infrared-lap-blanket
If he has good view from his window, how about a colourful dream catcher to hang in it, its lovely to watch it as it sways gently or www.ebay.co.uk/itm/BROWN-DREAM-CATCHER-22-X-50CM-TRADITIONAL-APACHE-INDIAN-STYLE-NEW-DREAMCATCHER/261819049706?hash=item3cf5a1a6ea:g:bisAAOSwuxFY0Wyt:rk:3:pf:0
maybe a bird feeder but check with NH first before you do this, esp if he is a ground floor room, the feeder would hang or be positioned in his view and a large bag of birdseed etc to be stored elsewhere so he could be wheeled out, someone allocated to scatter som seed for the feeder. It would bring joy to him maybe and others to see the birds coming to feed. Just keeps giving.
Did he / does he wear any particular aftershave? Maybe some of that? What about your mum, did she have a “signature” scent?
My mums was Arden Red Door. She wore a different one when I was small and stopped wearing that one after my father passed. She wore a different one for a couple of years - i cant remember what and then went to Red Door. My signature perfumes are 1 of 2, one if Yardley Fressia and the other is Arden Green tea nectarine blossom.
So if you know what it was, get a silky type scarf (light coloured) and literally soak it, and put in a sealed bag. Add the perfume to top up the scent and make it look fancy in a small fancy box.