From Mary-Julia Lomax on Facebook we get this request:

Calling all Knitters!
I have just been to a 2 day dementia course and seen these amazing Twiddle Mitts.
They are a knitted mitt which can be used to cover canulas so the patient is not pulling the canula but twiddling with the mitt instead. They can also be used as a distraction for dementia patients who often like to twiddle with things.
The hospital are crying out for more to be knitted as they are single patient use so the patient will go home with it on discharge.
Anything can be attached, buttons, bells, beads, keys, small teddies as long as they are attached securely.
A pattern to knit them can be found on Google by typing Twiddle Mitt Pattern.

Thank you

I think many elderly with dementia would like these to wear, so if you knit, or know a knitter, get cracking then donate to the local care home or hospital.