…..or drop hints that with an "XYZ" widget, I could spend more time in the workshop, whereas without one I would spend more time in the house instead. Might receive a positive response !!
£50 is quite a low limit for workshop tools.
Maybe some workshop fluids, cutting, rust prevention, cleaning spray, marking etc.
Perhaps a reference book of some sort?
Some nice scribers?
Swarf brushes?
There is a really good product called Eye-Muffs, which are ear defenders, with built-in eye protector 'glasses'. I have got a pair of these and they are really good; you can put it on and take it off very easily and quickly, and you don't have to put the arms of your eye protectors under the ear cups, which is uncomfortable and compromises the hearing protection. Eye-Muffs are made by an Australian company.
I think socks, jumpers etc are what people buy when they don't know what else to get you, so it's always worth dropping hints, and even having a Christmas present list. I keep a list of books, CDs, DVDs etc, that I would like to get. If asked, I can show the list to someone who wants to buy me something.