Thanks for the list!
We've used shampoo bars for a few years and can say there is no way they replace 2-3 bottles. They rarely last as long as one because the wet shower environment is not kind to soap bars.
What are the laundry sheets made of? It says "compost friendly" but not compostable.
We wash and re-use sandwich bags. They last forever, so we don't need to buy new bags of any kind.