In simple terms if you care about vulnerable and/or want schools and other vital services to stay open here's how you can help:
-lft your children twice a week as standard
-keep your child off school if they have symptoms and get them a pcr asap
-keep your child at home if anyone in the household has covid
-send your child to school in warm clothing
-support schools to bring back masks in classrooms at least whilst we get through this omicron tsunami.
If you're not willing to do these things you will be a contributing factor if/when schools have to close. Basic reality.
Longer term:
If you care about vulnerable children start making noise about how austerity has devastated society's ability to safeguard and take care of them. Demand funding for all children's services which have been unfit for purpose for years as people like us have been telling you. Stop buying into teacher bashing and school blaming that is about detracting from the facts of what 10 years of underfunding has done to schools ability to function in a normal year let alone the last two paying for covid provisions and supply.
You could also do small practical things like giving any outgrown uniform to your school to be passed on to kids who need it, find out if your school has a breakfast club for PP kids and see what you could usefully provide for it - we give all of ours toast and hot chocolate etc every morning and I bet we'd be glad of all sorts of donations whether consumables or basic equipment.
God knows how much we spend in a year giving basics like pens and pencils to kids who get sent in without even the most basic equipment every single day - maybe you could set up a parent body who fundraises to put together basic pencil cases with ruler, pen, pencil, rubber, protractors etc to give out to kids who don't have any kit. You could fundraise for a fund for paying for school trips or revision materials for kids whose parents can't or won't pay for them.
I know there are people who do genuinely care and want to help and thank you very much to those who do. Some of our parents have been fantastic through this whole crisis.