I would let the kids help to decorate the house - it can be a simple home made type of Christmas.
same with the tree or get a artificial tree and let the kids be in charge of decorating
gift cards for shopping after recovery?
just one big gift per kid { 1 expensive thing vs a bunch of little things}

I rarely ever do cards - email cards yes

I try to not fall into the commercial aspect of Christmas or any Holiday,
being with family and friends is the important thing.