I am "hosting" Boxing Day this year - it will be me and DH (both veggie), our young DCs (fussyish), PILs (not fussy), SIL and BIL (not fussy) and their two young kids (probably fussyish)
We don't see SIL and her family very often, so I want the focus of the day to be catching up, the cousins will be so excited to see each other :)
It will definitely be an informal lunch, with the main goal being that everyone has something to eat that they like!
After much internal debate (curry? Mexican? Wow them with an array of Ottolenghi dishes?
) I have decided to be boring and sensible and do jacket potatoes for lunch as they cook themselves, no need to be slaving over the hob, and I should be able to do a topping that everyone will like.... But what to do with them? Thoughts so far are sausages (meaty and veggie), cheese, baked beans, coleslaw, loads of salad..... my in-laws raved about the ham from our local butcher last time I got some in for them, so I thought I'd get some ham, maybe a pork pie....
Any other suggestions? If you had to have jacket spuds on Boxing Day, what would you want with them? 
I had thought of some chilli, but it can be difficult to get the spice level right when catering for adults and small children - too bland for some, too hot for others, no one is happy!!
Any suggestions gratefully received, TIA :)