I'm a bit late to this thread but ...
I'm at the wrong end of any road to meet up with most people BUT I'm also not the most active of people so cycling or running with a baton wouldnt be do-able however ...
...a few years ago I arranged a national event via a monthly newsletter that involved both groups and individuals. I'm in Mensa and it has some active local groups around the country who regularly get up to all sorts of different things BUT it has many more members who, for a whole heap of reasons, don't join in with their local group - this isn't a bad thing, it's just the way it is. To try to get them involved in some way I proposed 'Tea (put the at thingy in here) 3:00'.
On a given day, wherever we were we would have a Cup of Tea (or Coffee / Juice / Water / whatever) at 3 o'clock. Then we'd report on where and with whom including pictures etc. We had one woman who sat in her garden and had a cuppa with her dog for company and another crowd who climbed a mountain and took a pic at the top all holding mugs of tea! This way everyone could take part whether they were close to another participant or not - all they needed was a their cup and their drink.
Could we do similar, pick one of the days Jack has mentioned and at a given time of the day we could all have a
SafeTea Cuppa . The charity bit would be paying for the cuppa ...£1.50 a cup isn't too expensive is it? Businesses may well want to sponsor such an event in the workplace as a Safety Awareness thing. Those on their own or in small groups could fund their own Teas and use the Just Giving website as suggested to pay their charity donation in (maybe even get the staff at the Daily Mail to join in?
)
I know it's do-able 'cos I already did it. Cheers ...here's to your Health & Safe Tea!