From my point of view;
None of the above.
Nights out cost money. Transport costs money. It's too cold and dark to stand around at deserted bus stops whilst everybody else is picked up by their husbands after drinking tap water all night and causing an atmosphere because I refused to split the bill for food I can't eat even if I could afford it (celiac) and drinks I didn't have.
Beer and pizza kits - nice if you know for a fact that nobody in the house has allergies, celiac or an alcohol problem. Or is Muslim/teetotal. Who's going to be asking this incredibly personal information and keeping a record of it? Doesn't have to be 'is your husband an alcoholic?', just the fact that they don't want a bottle of wine is enough for assumptions to be made.
Bottle of wine - can you give me the money instead? Might want to check that nobody has an alcoholic partner at home or has allergies/is Muslim/etc as well, as they probably don't want it broadcast around the building.
Walking a mile - so how are we ensuring that people with disabilities aren't made to feel bad about not being a teamplayer here? Are we assuming that only those with visible disabilities and walking aids are unable to do it? What about those who have already done twice that to get into work in the morning unlike those in nice, warm cars?
Online quizzes - oh dear, I seem to have connectivity issues every night. It's intrusive. I'm not in the pub with you because quiz nights are usually packed to the gills, plus all the other things about not being able to afford/drink/eat.
Dogs - awesome. Love dogs. Don't have one though, so I'd just be looking at them, wishing I could. And probably hearing other non dog owners bitching about how unhygienic and/or how dangerous it is.
Yoga and meditation. Love the idea. But I don't get a break at the same time as everybody else. Is the teacher a good one? Are they insured and qualified? Are they experienced in teaching people with physical issues? Are they experienced in helping people if emotional or psychological issues come out during meditation? Have you got a warm, quiet, spacious room with proper mats, equipment and with a bolt so that nobody is disturbed by another member of staff with an 'urgent' phone call?
Scavenger hunts. Who is going to be actually setting them up, running them and then tidying up afterwards? They usually involve a fuckton of work for somebody else on near enough minimum wage.
From my point of view, getting a brilliant deal on a gym membership so that it is significantly cheaper than a mid range gym would be great. But that's not suitable for everybody.
Seriously, what is more use is more money. Give them the cash without it being tied to length of service or performance and they can decide. It'll probably go towards the increase in food, fuel and travel costs for the lower paid staff, but at least some will see a tenner here or there out of it after tax and NI and UC deductions.