I work at Crisis every other year. You have to apply (of course) and fill out forms etc but it's a way of giving back to society. I also find working at Sams very rewarding, especially around Christmas and New Year when many people are lonely, even young adults. The streets and an unloving home can bring people to an all time low, especially in winter.
If they don't appeal (and I grant that you'd have to apply now as you have to have an enhanced disclosure) how about an airbnb stay in someone's own home. I once stayed in Epcot Park Hotel & Spa over New Year and lo and behold was escorted to 6 different rooms to take my pick. I met a wonderful family from America, mum, dad and young son who invited me to eat with them on all 4 days, I swam in the pool every day, took many walks and enjoyed relaxing massages.
We have kept in touch.
All my AC, GC and GGC live at a fair distance, some abroad, and I love time on my own to do as I please.
I hope you find something interesting and enjoyable to fill what is, in essence, a 'traditional' family time.