I would buy my close family amazing, expensive gifts asap (pay of their mortgages, DIY, cars, whatever they wanted or needed, within reason). I like the idea of giving them all cash, but there's a chance some would gamble it, drink it, snort it or whatnot.
I'd put money in a high interest account of some kind for ds, for when he's 25 and hopefully old enough to spend it wisely. And I'd open a separate account to cover uni fees for ds and other kids in the family, if they don't go, their portion of the money goes to a charity that helps students instead.
I'd try to do my research, and support some local, well run charities and organisations financially.
As for me, I'd get a new house, and a car, first. Then, if possible, I'd invest in full, thorough, head to toe examination health checks for all my family, and my pets.
Then I could buy some random crap, guilt free...
I love this house, I would change a lot, but some things I would keep if possible.
www.propertypal.com/grangefield-39-ballygrainey-road-holywood/643286/photo-5